Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 603 prefixes
752 of the 786 possible NXX blocks are assigned in area code 603 (95.7% of capacity), spread across 147 rate centers and 49 holders. The largest holders are CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (246 blocks, 32.7%), BELL ATLANTIC MOBILE, INC (74 blocks, 9.8%), PAETEC ITEL, LLC (58 blocks, 7.7%). Grouped by brand, Consolidated accounts for 248 blocks; brand-attributable holders cover 74% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-02-12 to 2024-01-23, with 29 blocks handed out in 2001 alone. 602 blocks (80%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 46 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
752 assigned blocks of 786
147 rate centers
49 holders of record
80% in thousands-block pooling
Largest holders in 603
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| CONSOLIDATED COMM OF NO. NEW ENGLAND-NH | Consolidated | 246 | 32.7% |
| BELL ATLANTIC MOBILE, INC | – | 74 | 9.8% |
| PAETEC ITEL, LLC | Windstream | 58 | 7.7% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH | Verizon | 44 | 5.9% |
| OMNIPOINT MIAMI E LICENSE, LLC | T-Mobile | 43 | 5.7% |
| COMCAST IP PHONE, LLC | Comcast | 40 | 5.3% |
| LEVEL 3 COMMUNICATIONS, LLC - NH | Lumen | 37 | 4.9% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 34 | 4.5% |
| UNITED STATES CELLULAR - NH | – | 32 | 4.3% |
| FREEDOM RING COMMUNICATIONS, LLC | – | 32 | 4.3% |
| METROPCS, INC. | T-Mobile | 12 | 1.6% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - NH | AT&T | 8 | 1.1% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
MANCHESTER 80NASHUA 58CONCORD 39DERRY 29DOVER 29PORTSMOUTH 28MERRIMACK 23SALEM 20LACONIA 19KEENE 17ROCHESTER 16EXETER 15MILFORD 11PLYMOUTH 10SUNCOOK 9W LEBANON 8HANOVER 8CLAREMONT 8LEBANON 8HAMPTON 8PLAISTOW 7DURHAM 7BERLIN 6LITTLETON 6MEREDITH 6BEDFORD 6PETERBROGH 6RAYMOND 5NO CONWAY 5NEWPORT 5SUNAPEE 5LANCASTER 5COLEBROOK 4WOODSVILLE 4NEW BOSTON 4TILTON 4CTROSSIPEE 4HAMPSTEAD 4NOWOODSTOK 4GOFFSTOWN 4CONWAY 4SEABROOK 4NEWMARKET 3LYME 3BRISTOL 3CAMPTON 3WCHESTEFLD 3HOLLIS 3SO HAMPTON 3BARRINGTON 3CANAAN 3MILAN 3TAMWORTH 3KINGSTON 3ORFORD 3CANDIA 3RYE BEACH 3SOMERSWTH 3DEERFIELD 3PELHAM 3
All 752 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 603-200 | Comcast | NEWMARKET | 2011-08-16 | yes | yes |
| 603-202 | T-Mobile | CONCORD | 2023-01-13 | yes | yes |
| 603-203 | AT&T | MANCHESTER | 2003-05-14 | yes | yes |
| 603-204 | UNITED STATES CELLULAR - NH | NASHUA | – | yes | yes |
| 603-205 | T-Mobile | PORTSMOUTH | – | yes | yes |
| 603-206 | Windstream | MANCHESTER | – | yes | yes |
| 603-207 | Onvoy | DERRY | 2022-09-13 | yes | yes |
| 603-208 | T-Mobile | LYME | – | yes | yes |
| 603-209 | UNITED STATES CELLULAR - NH | KEENE | – | yes | yes |
| 603-210 | Comcast | SUNCOOK | – | yes | yes |
| 603-212 | Consolidated | SALEM | – | yes | yes |
| 603-213 | Comcast | MILFORD | 2012-11-08 | yes | yes |
| 603-214 | FREEDOM RING COMMUNICATIONS, LLC | ERROL | – | yes | yes |
| 603-215 | FREEDOM RING COMMUNICATIONS, LLC | BERLIN | – | yes | yes |
| 603-216 | Comcast | DERRY | – | yes | yes |
| 603-217 | BELL ATLANTIC MOBILE, INC | BRISTOL | 2001-07-11 | yes | yes |
| 603-218 | Windstream | MANCHESTER | – | yes | yes |
| 603-219 | T-Mobile | CONCORD | 2001-02-14 | yes | yes |
| 603-221 | Consolidated | NASHUA | – | – | yes |
| 603-222 | Consolidated | MANCHESTER | – | – | yes |
| 603-223 | Consolidated | CONCORD | – | yes | yes |
| 603-224 | Consolidated | CONCORD | – | – | yes |
| 603-225 | Consolidated | CONCORD | – | – | yes |
| 603-226 | Consolidated | CONCORD | – | – | yes |
| 603-227 | Consolidated | CONCORD | – | yes | yes |
| 603-228 | Consolidated | CONCORD | – | – | yes |
| 603-229 | Consolidated | CONCORD | – | yes | yes |
| 603-230 | Consolidated | CONCORD | – | yes | yes |
| 603-231 | T-Mobile | DERRY | 2001-05-03 | yes | yes |
| 603-232 | Comcast | MANCHESTER | – | yes | yes |
| 603-233 | T-Mobile | NASHUA | – | yes | yes |
| 603-234 | T-Mobile | DERRY | 2001-05-03 | yes | yes |
| 603-235 | T-Mobile | DERRY | 2001-05-03 | yes | yes |
| 603-236 | Consolidated | CAMPTON | – | yes | yes |
| 603-237 | Consolidated | COLEBROOK | – | yes | yes |
| 603-238 | Windstream | PLYMOUTH | – | yes | yes |
| 603-239 | Consolidated | WINCHESTER | – | yes | yes |
| 603-240 | Consolidated | MANCHESTER | – | – | yes |
| 603-241 | AT&T | DOVER | 2022-03-21 | yes | yes |
| 603-242 | Consolidated | TROY | – | yes | yes |
| 603-243 | Charter | WOODSVILLE | 2011-07-20 | yes | yes |
| 603-244 | Comcast | RAYMOND | – | yes | yes |
| 603-245 | Consolidated | PORTSMOUTH | – | – | yes |
| 603-246 | Consolidated | WSTEWATSTN | – | yes | yes |
| 603-247 | AT&T | DERRY | – | yes | yes |
| 603-248 | Consolidated | DOVER | – | – | yes |
| 603-249 | Consolidated | MILFORD | – | yes | yes |
| 603-250 | FREEDOM RING COMMUNICATIONS, LLC | CENTER HBR | – | yes | yes |
| 603-251 | Windstream | CHARLESTN | 2012-02-28 | yes | yes |
| 603-252 | UNITED STATES CELLULAR - NH | W LEBANON | 2001-03-22 | yes | yes |
| 603-253 | Consolidated | CENTER HBR | – | yes | yes |
| 603-254 | UNITED STATES CELLULAR - NH | PLYMOUTH | – | yes | yes |
| 603-255 | CSC WIRELESS, LLC | MANCHESTER | 2020-02-19 | yes | yes |
| 603-256 | Consolidated | WCHESTEFLD | – | yes | yes |
| 603-257 | FREEDOM RING COMMUNICATIONS, LLC | PLAISTOW | – | yes | yes |
| 603-258 | T-Mobile | HOLLIS | 2017-04-14 | yes | yes |
| 603-259 | Lumen | LITTLETON | – | yes | yes |
| 603-260 | Comcast | DERRY | 2013-01-04 | yes | yes |
| 603-261 | UNITED STATES CELLULAR - NH | MERRIMACK | – | yes | yes |
| 603-262 | Consolidated | MERRIMACK | – | yes | yes |
| 603-263 | Peerless | MANCHESTER | – | yes | yes |
| 603-264 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-265 | T-Mobile | NEW BOSTON | – | yes | yes |
| 603-266 | Consolidated | TILTON | – | yes | yes |
| 603-267 | Consolidated | BELMONT | – | yes | yes |
| 603-268 | Consolidated | SUNCOOK | – | yes | yes |
| 603-269 | UNION TEL. CO. | CTRBARNSTE | – | yes | yes |
| 603-270 | Verizon | SUNCOOK | – | yes | yes |
| 603-271 | Consolidated | CONCORD | – | – | yes |
| 603-272 | Consolidated | PIERMONT | – | yes | yes |
| 603-273 | Verizon | LACONIA | – | yes | yes |
| 603-274 | Verizon | SO HAMPTON | – | yes | yes |
| 603-275 | T-Mobile | DERRY | – | yes | yes |
| 603-276 | BELL ATLANTIC MOBILE, INC | W LEBANON | – | yes | yes |
| 603-277 | Comcast | HANOVER | 2006-10-13 | yes | yes |
| 603-278 | BRETTON WOODS TEL. CO. | BRETTON WD | – | – | yes |
| 603-279 | Consolidated | MEREDITH | – | – | yes |
| 603-280 | Lumen | BARRINGTON | – | yes | yes |
| 603-281 | Consolidated | NASHUA | – | yes | yes |
| 603-282 | Verizon | CANAAN | – | yes | yes |
| 603-283 | Windstream | KEENE | – | yes | yes |
| 603-284 | Consolidated | CTRSANDWIH | – | yes | yes |
| 603-285 | Verizon | DOVER | – | yes | yes |
| 603-286 | Consolidated | TILTON | – | yes | yes |
| 603-287 | Lumen | CLAREMONT | – | yes | yes |
| 603-288 | Vonage | NASHUA | 2017-07-05 | yes | yes |
| 603-289 | AT&T | MANCHESTER | – | – | yes |
| 603-290 | T-Mobile | CONCORD | – | yes | yes |
| 603-291 | Comcast | GREENVILLE | 2006-10-26 | yes | yes |
| 603-292 | Comcast | NEWMARKET | – | yes | yes |
| 603-293 | Consolidated | LACONIA | – | yes | yes |
| 603-294 | Lumen | PORTSMOUTH | – | yes | yes |
| 603-295 | Windstream | DURHAM | 2001-04-26 | – | yes |
| 603-296 | Windstream | MANCHESTER | – | yes | yes |
| 603-297 | FREEDOM RING COMMUNICATIONS, LLC | CTROSSIPEE | – | yes | yes |
| 603-298 | Consolidated | W LEBANON | – | yes | yes |
| 603-299 | AT&T | BARTLETT | 2017-07-28 | yes | yes |
| 603-300 | T-Mobile | CHESTER | 2003-06-09 | yes | yes |
| 603-301 | Lumen | CTROSSIPEE | 2001-07-11 | yes | yes |
| 603-302 | Consolidated | MANCHESTER | 2001-09-19 | – | yes |
| 603-303 | BELL ATLANTIC MOBILE, INC | RAYMOND | 2001-03-09 | – | yes |
| 603-304 | UNITED STATES CELLULAR - NH | ENFIELD | – | yes | yes |
| 603-305 | BELL ATLANTIC MOBILE, INC | NASHUA | 2001-08-21 | yes | yes |
| 603-306 | FREEDOM RING COMMUNICATIONS, LLC | LEBANON | 2006-12-18 | yes | yes |
| 603-307 | BELL ATLANTIC MOBILE, INC | NO CONWAY | 2012-09-06 | yes | yes |
| 603-308 | Consolidated | HANOVER | 2014-09-30 | yes | yes |
| 603-309 | BELL ATLANTIC MOBILE, INC | NEWPORT | 2013-08-09 | yes | yes |
| 603-310 | Windstream | BEDFORD | – | yes | yes |
| 603-312 | BELL ATLANTIC MOBILE, INC | DOVER | – | – | yes |
| 603-313 | UNITED STATES CELLULAR - NH | KEENE | – | yes | yes |
| 603-314 | Windstream | MANCHESTER | – | yes | yes |
| 603-315 | BELL ATLANTIC MOBILE, INC | MANCHESTER | – | – | yes |
| 603-316 | BELL ATLANTIC MOBILE, INC | MILFORD | 2017-10-16 | yes | yes |
| 603-317 | Verizon | MILAN | – | yes | yes |
| 603-318 | BELL ATLANTIC MOBILE, INC | NASHUA | – | yes | yes |
| 603-319 | Windstream | PORTSMOUTH | – | yes | yes |
| 603-320 | AT&T | NASHUA | – | yes | yes |
| 603-321 | BELL ATLANTIC MOBILE, INC | NASHUA | – | – | yes |
| 603-322 | AT&T | W LEBANON | – | yes | yes |
| 603-323 | Consolidated | TAMWORTH | – | yes | yes |
| 603-324 | Verizon | NASHUA | – | yes | yes |
| 603-325 | Verizon | NEW BOSTON | – | yes | yes |
| 603-326 | Lumen | BERLIN | – | yes | yes |
| 603-327 | Windstream | SALEM | – | yes | yes |
| 603-328 | Windstream | SALEM | – | yes | yes |
| 603-329 | Consolidated | HAMPSTEAD | – | yes | yes |
| 603-330 | Consolidated | ROCHESTER | – | – | yes |
| 603-331 | Lumen | COLEBROOK | – | yes | yes |
| 603-332 | Consolidated | ROCHESTER | – | – | yes |
| 603-333 | Peerless | CONCORD | – | yes | yes |
| 603-334 | Consolidated | PORTSMOUTH | – | yes | yes |
| 603-335 | Consolidated | ROCHESTER | – | – | yes |
| 603-336 | Consolidated | HINSDALE | – | yes | yes |
| 603-337 | Consolidated | ROCHESTER | – | yes | yes |
| 603-338 | Verizon | KEENE | – | yes | yes |
| 603-339 | AT&T | DERRY | – | yes | yes |
| 603-340 | BELL ATLANTIC MOBILE, INC | SUNCOOK | 2001-02-12 | yes | yes |
| 603-341 | T-Mobile | MERRIMACK | – | yes | yes |
| 603-342 | Consolidated | BERLIN | – | yes | yes |
| 603-343 | Comcast | DOVER | – | yes | yes |
| 603-344 | UNITED STATES CELLULAR - NH | SUNCOOK | – | yes | yes |
| 603-345 | UNITED STATES CELLULAR - NH | MERRIMACK | – | yes | yes |
| 603-346 | HD CARRIER LLC | PLYMOUTH | – | yes | yes |
| 603-347 | Comcast | KINGSTON | – | yes | yes |
| 603-348 | UNITED STATES CELLULAR - NH | NOWOODSTOK | – | yes | yes |
| 603-349 | UNITED STATES CELLULAR - NH | W LEBANON | – | yes | yes |
| 603-350 | Verizon | MILTON | – | yes | yes |
| 603-351 | Verizon | GOFFSTOWN | – | yes | yes |
| 603-352 | Consolidated | KEENE | – | – | yes |
| 603-353 | Consolidated | ORFORD | – | yes | yes |
| 603-354 | Consolidated | KEENE | – | yes | yes |
| 603-355 | Consolidated | KEENE | – | yes | yes |
| 603-356 | Consolidated | NO CONWAY | – | yes | yes |
| 603-357 | FIDIUM ENTERPRISE SERVICES, LLC | KEENE | – | yes | yes |
| 603-358 | Consolidated | KEENE | – | – | yes |
| 603-359 | BELL ATLANTIC MOBILE, INC | LEBANON | – | – | yes |
| 603-360 | TOPSHAM COMMUNICATIONS, LLC | ORFORD | 2010-06-11 | yes | yes |
| 603-361 | BELL ATLANTIC MOBILE, INC | MANCHESTER | 2001-05-18 | yes | yes |
| 603-362 | Consolidated | HAMPSTEAD | – | yes | yes |
| 603-363 | Consolidated | SPOFFORD | – | yes | yes |
| 603-364 | UNION TEL. CO. | GLNTNIRWRS | – | yes | yes |
| 603-365 | T-Mobile | MERRIMACK | 2001-05-04 | yes | yes |
| 603-366 | Consolidated | LACONIA | – | yes | yes |
| 603-367 | Consolidated | MADISON | – | yes | yes |
| 603-368 | AT&T | PORTSMOUTH | 2017-12-27 | yes | yes |
| 603-369 | Lumen | CONCORD | – | yes | yes |
| 603-370 | BELL ATLANTIC MOBILE, INC | CANDIA | 2001-10-17 | yes | yes |
| 603-371 | Windstream | PETERBROGH | – | yes | yes |
| 603-372 | FREEDOM RING COMMUNICATIONS, LLC | CLAREMONT | – | yes | yes |
| 603-373 | Windstream | PORTSMOUTH | – | yes | yes |
| 603-374 | Consolidated | BARTLETT | – | yes | yes |
| 603-375 | Charter | ASHLAND | 2012-07-19 | yes | yes |
| 603-376 | American Messaging | DOVER | – | – | yes |
| 603-377 | T-Mobile | MERRIMACK | – | yes | yes |
| 603-378 | Consolidated | PLAISTOW | – | yes | yes |
| 603-379 | Lumen | RYE BEACH | – | yes | yes |
| 603-380 | AT&T | PORTSMOUTH | – | yes | yes |
| 603-381 | UNITED STATES CELLULAR - NH | W LEBANON | – | yes | yes |
| 603-382 | Consolidated | PLAISTOW | – | – | yes |
| 603-383 | Consolidated | JACKSON | – | yes | yes |
| 603-384 | Comcast | GOFFSTOWN | – | yes | yes |
| 603-385 | Consolidated | MANCHESTER | – | – | yes |
| 603-386 | Windstream | SALEM | – | yes | yes |
| 603-387 | BELL ATLANTIC MOBILE, INC | LACONIA | – | – | yes |
| 603-388 | FREEDOM RING COMMUNICATIONS, LLC | COLEBROOK | – | yes | yes |
| 603-389 | Windstream | DURHAM | – | yes | yes |
| 603-390 | Verizon | JEFFERSON | – | yes | yes |
| 603-391 | AT&T | MANCHESTER | – | yes | yes |
| 603-392 | Comcast | WINCHESTER | 2006-11-07 | yes | yes |
| 603-393 | UNITED STATES CELLULAR - NH | LACONIA | 2001-05-04 | yes | yes |
| 603-394 | Consolidated | SO HAMPTON | – | yes | yes |
| 603-395 | Verizon | EXETER | – | yes | yes |
| 603-396 | T-Mobile | MERRIMACK | – | yes | yes |
| 603-397 | Comcast | DURHAM | – | yes | yes |
| 603-398 | UNITED STATES CELLULAR - NH | W LEBANON | – | yes | yes |
| 603-399 | Consolidated | WESTMORELD | – | yes | yes |
| 603-400 | Charter | HOLLIS | 2011-08-31 | yes | yes |
| 603-401 | BELL ATLANTIC MOBILE, INC | SALEM | 2001-10-17 | yes | yes |
| 603-402 | BELL ATLANTIC MOBILE, INC | NASHUA | 2012-09-06 | yes | yes |
| 603-403 | Comcast | ROCHESTER | 2018-07-31 | yes | yes |
| 603-404 | BELL ATLANTIC MOBILE, INC | DERRY | 2016-01-04 | yes | yes |
| 603-405 | AT&T | SOMERSWTH | 2016-04-20 | yes | yes |
| 603-406 | T-Mobile | CONCORD | 2018-12-21 | yes | yes |
| 603-407 | Windstream | BELMONT | 2015-05-06 | yes | yes |
| 603-408 | AT&T | BERLIN | 2015-12-09 | yes | yes |
| 603-409 | AT&T | LACONIA | 2015-10-13 | yes | yes |
| 603-410 | Windstream | CONCORD | – | yes | yes |
| 603-412 | T-Mobile | PLYMOUTH | – | yes | yes |
| 603-413 | Windstream | MANCHESTER | – | yes | yes |
| 603-414 | TDS | SUNAPEE | – | yes | yes |
| 603-415 | FREEDOM RING COMMUNICATIONS, LLC | CONCORD | – | – | yes |
| 603-416 | T-Mobile | RAYMOND | 2018-12-21 | yes | yes |
| 603-417 | T-Mobile | NASHUA | 2015-04-14 | yes | yes |
| 603-418 | Windstream | EXETER | – | yes | yes |
| 603-419 | UNITED STATES CELLULAR - NH | SUNCOOK | – | yes | yes |
| 603-420 | Verizon | MERRIMACK | – | yes | yes |
| 603-421 | Consolidated | DERRY | – | yes | yes |
| 603-422 | Consolidated | PORTSMOUTH | – | yes | yes |
| 603-423 | Consolidated | MERRIMACK | – | yes | yes |
| 603-424 | Consolidated | MERRIMACK | – | – | yes |
| 603-425 | Consolidated | DERRY | – | yes | yes |
| 603-426 | Consolidated | DERRY | – | yes | yes |
| 603-427 | Consolidated | PORTSMOUTH | – | yes | yes |
| 603-428 | MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY | HENNIKER | – | yes | yes |
| 603-429 | Consolidated | MERRIMACK | – | – | yes |
| 603-430 | Consolidated | PORTSMOUTH | – | – | yes |
| 603-431 | Consolidated | PORTSMOUTH | – | – | yes |
| 603-432 | Consolidated | DERRY | – | – | yes |
| 603-433 | Consolidated | PORTSMOUTH | – | – | yes |
| 603-434 | Consolidated | DERRY | – | – | yes |
| 603-435 | Consolidated | PITTSFIELD | – | yes | yes |
| 603-436 | Consolidated | PORTSMOUTH | – | – | yes |
| 603-437 | Consolidated | DERRY | – | – | yes |
| 603-438 | T-Mobile | NASHUA | – | yes | yes |
| 603-439 | Windstream | KEENE | – | yes | yes |
| 603-440 | Consolidated | MERRIMACK | – | yes | yes |
| 603-441 | Comcast | ROCHESTER | 2021-09-09 | yes | yes |
| 603-442 | Consolidated | LEBANON | – | yes | yes |
| 603-443 | Consolidated | LEBANON | – | yes | yes |
| 603-444 | Consolidated | LITTLETON | – | – | yes |
| 603-445 | Consolidated | NO WALPOLE | – | yes | yes |
| 603-446 | Consolidated | MARLOW | – | yes | yes |
| 603-447 | Consolidated | CONWAY | – | yes | yes |
| 603-448 | Consolidated | LEBANON | – | – | yes |
| 603-449 | Consolidated | MILAN | – | yes | yes |
| 603-450 | T-Mobile | CONCORD | 2018-09-11 | yes | yes |
| 603-451 | AT&T | CONCORD | 2020-04-08 | yes | yes |
| 603-452 | FREEDOM RING COMMUNICATIONS, LLC | CONWAY | – | yes | yes |
| 603-453 | AT&T | HAMPSTEAD | – | yes | yes |
| 603-454 | UNITED STATES CELLULAR - NH | SUNAPEE | – | yes | yes |
| 603-455 | UNITED STATES CELLULAR - NH | LACONIA | – | yes | yes |
| 603-456 | MERRIMACK COUNTY TEL. CO. | WARNER | – | yes | yes |
| 603-457 | IDT AMERICA, CORP. - NH | DOVER | 2020-11-27 | yes | yes |
| 603-458 | Comcast | SALEM | – | yes | yes |
| 603-459 | Windstream | NASHUA | – | yes | yes |
| 603-460 | Verizon | DEERFIELD | – | yes | yes |
| 603-461 | UNITED STATES CELLULAR - NH | MERRIMACK | – | yes | yes |
| 603-462 | FREEDOM RING COMMUNICATIONS, LLC | DEERFIELD | – | yes | yes |
| 603-463 | Consolidated | DEERFIELD | – | yes | yes |
| 603-464 | MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY | HILLSBORO | – | yes | yes |
| 603-465 | HOLLIS TELEPHONE COMPANY, INC. | HOLLIS | – | yes | yes |
| 603-466 | Consolidated | GORHAM | – | yes | yes |
| 603-467 | WAVENATION, LLC | MANCHESTER | – | yes | yes |
| 603-468 | FREEDOM RING COMMUNICATIONS, LLC | SEABROOK | – | yes | yes |
| 603-469 | KEARSARGE TEL. CO. | MERIDEN | – | yes | yes |
| 603-470 | UNITED STATES CELLULAR - NH | CONCORD | 2001-04-19 | yes | yes |
| 603-471 | Consolidated | BEDFORD | – | yes | yes |
| 603-472 | Consolidated | BEDFORD | – | yes | yes |
| 603-473 | Consolidated | MILTON ML | – | yes | yes |
| 603-474 | Consolidated | SEABROOK | – | yes | yes |
| 603-475 | BELL ATLANTIC MOBILE, INC | SALEM | – | – | yes |
| 603-476 | Consolidated | CTRSANDWIH | – | yes | yes |
| 603-477 | UNITED STATES CELLULAR - NH | CLAREMONT | – | yes | yes |
| 603-478 | GRANITE STATE TEL., INC. | HLLSBUPVLG | – | – | yes |
| 603-479 | AT&T | DERRY | – | – | yes |
| 603-480 | Bandwidth | MANCHESTER | – | – | yes |
| 603-481 | BELL ATLANTIC MOBILE, INC | PLYMOUTH | – | yes | yes |
| 603-482 | Consolidated | ERROL | – | yes | yes |
| 603-483 | Consolidated | CANDIA | – | yes | yes |
| 603-484 | BELL ATLANTIC MOBILE, INC | NASHUA | 2016-09-21 | yes | yes |
| 603-485 | Consolidated | SUNCOOK | – | yes | yes |
| 603-486 | UNITED STATES CELLULAR - NH | MANCHESTER | – | yes | yes |
| 603-487 | Consolidated | NEW BOSTON | – | yes | yes |
| 603-488 | Comcast | BEDFORD | – | yes | yes |
| 603-489 | Comcast | HAMPSTEAD | – | yes | yes |
| 603-490 | BELL ATLANTIC MOBILE, INC | DERRY | – | – | yes |
| 603-491 | BELL ATLANTIC MOBILE, INC | CONCORD | – | – | yes |
| 603-492 | Consolidated | MANCHESTER | – | – | yes |
| 603-493 | BELL ATLANTIC MOBILE, INC | MERRIMACK | – | – | yes |
| 603-494 | BELL ATLANTIC MOBILE, INC | MERRIMACK | – | – | yes |
| 603-495 | GRANITE STATE TEL., INC. | WASHINGTON | – | – | yes |
| 603-496 | BELL ATLANTIC MOBILE, INC | CONCORD | – | – | yes |
| 603-497 | Consolidated | GOFFSTOWN | – | yes | yes |
| 603-498 | BELL ATLANTIC MOBILE, INC | PORTSMOUTH | – | – | yes |
| 603-499 | Lumen | KEENE | – | yes | yes |
| 603-500 | FRACTEL, LLC | TILTON | 2020-06-15 | yes | yes |
| 603-501 | Windstream | PORTSMOUTH | – | yes | yes |
| 603-502 | AT&T | PORTSMOUTH | – | – | yes |
| 603-503 | Verizon | LANCASTER | – | yes | yes |
| 603-504 | T-Mobile | CLAREMONT | – | yes | yes |
| 603-505 | BELL ATLANTIC MOBILE, INC | DERRY | 2002-10-09 | yes | yes |
| 603-506 | AT&T | MANCHESTER | 2018-10-29 | yes | yes |
| 603-507 | AT&T | ROCHESTER | 2015-07-28 | yes | yes |
| 603-508 | BELL ATLANTIC MOBILE, INC | PELHAM | 2001-08-08 | yes | yes |
| 603-509 | Windstream | ROCHESTER | 2001-09-24 | yes | yes |
| 603-510 | Comcast | MERIDEN | 2010-03-29 | yes | yes |
| 603-512 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-513 | BELL ATLANTIC MOBILE, INC | CONCORD | – | yes | yes |
| 603-514 | BELL ATLANTIC MOBILE, INC | NASHUA | 2021-01-21 | yes | yes |
| 603-515 | Consolidated | WOLFEBORO | – | yes | yes |
| 603-516 | FREEDOM RING COMMUNICATIONS, LLC | DOVER | – | – | yes |
| 603-517 | American Messaging | MERRIMACK | – | – | yes |
| 603-518 | AT&T | MANCHESTER | – | yes | yes |
| 603-519 | BELL ATLANTIC MOBILE, INC | EXETER | 2018-10-04 | yes | yes |
| 603-520 | BELL ATLANTIC MOBILE, INC | LACONIA | – | – | yes |
| 603-521 | AT&T | NASHUA | – | yes | yes |
| 603-522 | Consolidated | SANBORNVL | – | yes | yes |
| 603-523 | Consolidated | CANAAN | – | yes | yes |
| 603-524 | Consolidated | LACONIA | – | – | yes |
| 603-525 | Consolidated | HANCOCK | – | yes | yes |
| 603-526 | KEARSARGE TEL. CO. | NEW LONDON | – | – | yes |
| 603-527 | Consolidated | LACONIA | – | yes | yes |
| 603-528 | Consolidated | LACONIA | – | – | yes |
| 603-529 | GRANITE STATE TEL., INC. | WEARE | – | – | yes |
| 603-530 | BELL ATLANTIC MOBILE, INC | BRISTOL | 2002-02-22 | yes | yes |
| 603-531 | AT&T | PORTSMOUTH | – | yes | yes |
| 603-532 | Consolidated | JAFFREY | – | yes | yes |
| 603-533 | UNITED STATES CELLULAR - NH | MERRIMACK | – | yes | yes |
| 603-534 | BELL ATLANTIC MOBILE, INC | DOVER | – | – | yes |
| 603-535 | Windstream | PLYMOUTH | – | – | yes |
| 603-536 | Consolidated | PLYMOUTH | – | – | yes |
| 603-537 | Consolidated | DERRY | – | yes | yes |
| 603-538 | Consolidated | PITTSBURG | – | yes | yes |
| 603-539 | Consolidated | CTROSSIPEE | – | yes | yes |
| 603-540 | BELL ATLANTIC MOBILE, INC | MANCHESTER | 2001-08-21 | yes | yes |
| 603-541 | FIDIUM ENTERPRISE SERVICES, LLC | MANCHESTER | 2001-05-21 | yes | yes |
| 603-542 | Consolidated | CLAREMONT | – | – | yes |
| 603-543 | Consolidated | CLAREMONT | – | yes | yes |
| 603-544 | MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY | MELVIN VLG | – | yes | yes |
| 603-545 | Windstream | CONCORD | – | yes | yes |
| 603-546 | Windstream | NASHUA | – | yes | yes |
| 603-547 | Consolidated | GREENFIELD | – | yes | yes |
| 603-548 | BELL ATLANTIC MOBILE, INC | DERRY | – | – | yes |
| 603-549 | Consolidated | DERRY | – | – | yes |
| 603-550 | Telnyx | DOVER | – | yes | yes |
| 603-551 | Consolidated | MANCHESTER | – | – | yes |
| 603-552 | Verizon | DERRY | – | yes | yes |
| 603-553 | AT&T | DERRY | – | – | yes |
| 603-554 | UNITED STATES CELLULAR - NH | MILFORD | – | yes | yes |
| 603-556 | Lumen | LACONIA | – | yes | yes |
| 603-557 | T-Mobile | NASHUA | – | yes | yes |
| 603-558 | BELL ATLANTIC MOBILE, INC | CLAREMONT | – | yes | yes |
| 603-559 | Consolidated | PORTSMOUTH | – | – | yes |
| 603-560 | AT&T | SALEM | – | yes | yes |
| 603-561 | Consolidated | NASHUA | – | – | yes |
| 603-562 | UNITED STATES CELLULAR - NH | PETERBROGH | – | yes | yes |
| 603-563 | Consolidated | DUBLIN | – | yes | yes |
| 603-564 | Consolidated | MANCHESTER | – | – | yes |
| 603-565 | Lumen | PENACOOK | – | yes | yes |
| 603-566 | BELL ATLANTIC MOBILE, INC | NASHUA | – | – | yes |
| 603-567 | Lumen | PETERBROGH | – | yes | yes |
| 603-568 | BELL ATLANTIC MOBILE, INC | CONCORD | 2002-08-06 | yes | yes |
| 603-569 | Consolidated | WOLFEBORO | – | – | yes |
| 603-570 | AT&T | PORTSMOUTH | – | yes | yes |
| 603-571 | AT&T | DERRY | – | yes | yes |
| 603-573 | Verizon | CONCORD | – | yes | yes |
| 603-574 | Lumen | ALSTEAD | – | yes | yes |
| 603-575 | Verizon | LITTLETON | – | yes | yes |
| 603-576 | Lumen | ORFORD | – | yes | yes |
| 603-577 | Consolidated | NASHUA | – | yes | yes |
| 603-578 | Consolidated | NASHUA | – | – | yes |
| 603-579 | Consolidated | NASHUA | – | – | yes |
| 603-580 | Comcast | EXETER | – | yes | yes |
| 603-581 | Windstream | LACONIA | – | yes | yes |
| 603-582 | UNITED STATES CELLULAR - NH | MERRIMACK | – | yes | yes |
| 603-583 | Lumen | EXETER | – | yes | yes |
| 603-584 | T-Mobile | CONCORD | 2021-06-29 | yes | yes |
| 603-585 | Consolidated | FITZWILLIM | – | yes | yes |
| 603-586 | Consolidated | JEFFERSON | – | yes | yes |
| 603-587 | Verizon | CANDIA | – | yes | yes |
| 603-588 | MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY | ANTRIM | – | yes | yes |
| 603-589 | Windstream | NASHUA | – | yes | yes |
| 603-590 | FREEDOM RING COMMUNICATIONS, LLC | DURHAM | – | yes | yes |
| 603-591 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-592 | Verizon | SPOFFORD | – | yes | yes |
| 603-593 | Windstream | JAFFREY | 2003-06-26 | yes | yes |
| 603-594 | Consolidated | NASHUA | – | – | yes |
| 603-595 | Consolidated | NASHUA | – | – | yes |
| 603-596 | Consolidated | NASHUA | – | – | yes |
| 603-597 | Verizon | LYME | – | yes | yes |
| 603-598 | Consolidated | NASHUA | – | – | yes |
| 603-599 | Consolidated | NASHUA | – | – | yes |
| 603-600 | COMMIO, LLC | MANCHESTER | 2020-05-29 | yes | yes |
| 603-601 | Windstream | HAMPTON | – | yes | yes |
| 603-602 | AT&T | ROCHESTER | 2020-12-04 | yes | yes |
| 603-604 | Consolidated | RYE BEACH | – | yes | yes |
| 603-605 | Peerless | DOVER | – | yes | yes |
| 603-606 | Charter | MANCHESTER | – | yes | yes |
| 603-607 | NUSO, LLC | WCHESTEFLD | 2020-08-13 | yes | yes |
| 603-608 | T-Mobile | NORTHWOOD | 2002-01-22 | yes | yes |
| 603-609 | AT&T | DOVER | – | yes | yes |
| 603-610 | Windstream | PORTSMOUTH | – | yes | yes |
| 603-612 | Windstream | PLAISTOW | – | yes | yes |
| 603-613 | Verizon | COLEBROOK | – | yes | yes |
| 603-614 | Lumen | WCHESTEFLD | – | yes | yes |
| 603-615 | Consolidated | MANCHESTER | – | – | yes |
| 603-616 | UNITED STATES CELLULAR - NH | LITTLETON | – | yes | yes |
| 603-617 | Windstream | DOVER | – | yes | yes |
| 603-618 | Lumen | PIKE | – | yes | yes |
| 603-619 | Comcast | LACONIA | 2022-09-01 | yes | yes |
| 603-620 | UNITED STATES CELLULAR - NH | MERRIMACK | – | yes | yes |
| 603-621 | Consolidated | MANCHESTER | – | – | yes |
| 603-622 | Consolidated | MANCHESTER | – | – | yes |
| 603-623 | Consolidated | MANCHESTER | – | – | yes |
| 603-624 | Consolidated | MANCHESTER | – | – | yes |
| 603-625 | Consolidated | MANCHESTER | – | – | yes |
| 603-626 | Consolidated | MANCHESTER | – | – | yes |
| 603-627 | Consolidated | MANCHESTER | – | – | yes |
| 603-628 | Consolidated | MANCHESTER | – | – | yes |
| 603-629 | Consolidated | MANCHESTER | – | – | yes |
| 603-630 | BELL ATLANTIC MOBILE, INC | LACONIA | 2002-01-22 | yes | yes |
| 603-631 | UNITED STATES CELLULAR - NH | LANCASTER | 2002-02-22 | yes | yes |
| 603-632 | Consolidated | ENFIELD | – | yes | yes |
| 603-633 | BELL ATLANTIC MOBILE, INC | MILFORD | 2022-04-21 | yes | yes |
| 603-634 | Consolidated | MANCHESTER | – | yes | yes |
| 603-635 | Consolidated | PELHAM | – | yes | yes |
| 603-636 | Consolidated | GROVETON | – | yes | yes |
| 603-637 | Verizon | BEDFORD | – | yes | yes |
| 603-638 | Consolidated | MONROE | – | yes | yes |
| 603-639 | Consolidated | MANCHESTER | – | – | yes |
| 603-640 | Consolidated | HANOVER | – | yes | yes |
| 603-641 | Consolidated | MANCHESTER | – | – | yes |
| 603-642 | Consolidated | KINGSTON | – | yes | yes |
| 603-643 | Consolidated | HANOVER | – | – | yes |
| 603-644 | Consolidated | MANCHESTER | – | – | yes |
| 603-645 | Consolidated | MANCHESTER | – | – | yes |
| 603-646 | Consolidated | HANOVER | – | – | yes |
| 603-647 | Consolidated | MANCHESTER | – | – | yes |
| 603-648 | KEARSARGE TEL. CO. | SALISBURY | – | yes | yes |
| 603-649 | Comcast | JAFFREY | 2022-09-29 | yes | yes |
| 603-650 | Consolidated | HANOVER | – | – | yes |
| 603-651 | UNITED STATES CELLULAR - NH | CTROSSIPEE | – | yes | yes |
| 603-652 | Consolidated | MILTON | – | yes | yes |
| 603-653 | Consolidated | HANOVER | – | yes | yes |
| 603-654 | WILTON TEL. CO. | WILTON | – | yes | yes |
| 603-655 | Consolidated | MANCHESTER | – | – | yes |
| 603-656 | FIDIUM ENTERPRISE SERVICES, LLC | MANCHESTER | – | yes | yes |
| 603-657 | Windstream | MANCHESTER | – | yes | yes |
| 603-658 | FREEDOM RING COMMUNICATIONS, LLC | EXETER | – | – | yes |
| 603-659 | Consolidated | NEWMARKET | – | – | yes |
| 603-660 | BELL ATLANTIC MOBILE, INC | GOFFSTOWN | 2002-02-22 | yes | yes |
| 603-661 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-662 | UNITED STATES CELLULAR - NH | CONWAY | – | yes | yes |
| 603-663 | Consolidated | MANCHESTER | – | yes | yes |
| 603-664 | Consolidated | BARRINGTON | – | yes | yes |
| 603-665 | Consolidated | MANCHESTER | – | yes | yes |
| 603-666 | Consolidated | MANCHESTER | – | – | yes |
| 603-667 | Verizon | LEBANON | – | yes | yes |
| 603-668 | Consolidated | MANCHESTER | – | – | yes |
| 603-669 | Consolidated | MANCHESTER | – | – | yes |
| 603-670 | Windstream | MERRIMACK | – | yes | yes |
| 603-671 | Verizon | FRANKLIN | – | yes | yes |
| 603-672 | Consolidated | MILFORD | – | – | yes |
| 603-673 | Consolidated | MILFORD | – | – | yes |
| 603-674 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-675 | Consolidated | PLAINFIELD | – | yes | yes |
| 603-676 | FREEDOM RING COMMUNICATIONS, LLC | HANOVER | – | yes | yes |
| 603-677 | Verizon | MEREDITH | – | yes | yes |
| 603-678 | Lumen | LEBANON | – | yes | yes |
| 603-679 | Consolidated | EPPING | – | yes | yes |
| 603-680 | FIDIUM ENTERPRISE SERVICES, LLC | HILLSBORO | – | yes | yes |
| 603-681 | Windstream | SALEM | – | yes | yes |
| 603-682 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-683 | Consolidated | MERRIMACK | – | – | yes |
| 603-684 | Lumen | LANCASTER | – | yes | yes |
| 603-685 | Windstream | SALEM | – | yes | yes |
| 603-686 | BELL ATLANTIC MOBILE, INC | EXETER | 2002-09-12 | yes | yes |
| 603-687 | FREEDOM RING COMMUNICATIONS, LLC | JACKSON | – | yes | yes |
| 603-688 | Peerless | CONCORD | 2021-02-24 | yes | yes |
| 603-689 | Windstream | NASHUA | – | yes | yes |
| 603-690 | Verizon | CLAREMONT | – | yes | yes |
| 603-691 | COMMIO, LLC | EXETER | – | yes | yes |
| 603-692 | Consolidated | SOMERSWTH | – | yes | yes |
| 603-693 | Windstream | EPPING | – | yes | yes |
| 603-694 | Consolidated | CHATHAM | – | yes | yes |
| 603-695 | Consolidated | MANCHESTER | – | – | yes |
| 603-696 | Onvoy | MANCHESTER | 2021-05-17 | yes | yes |
| 603-697 | Comcast | DOVER | 2022-10-06 | yes | yes |
| 603-698 | NUSO, LLC | MANCHESTER | – | yes | yes |
| 603-699 | NUSO, LLC | NASHUA | – | yes | yes |
| 603-701 | IDT AMERICA, CORP. - NH | NEW DURHAM | 2009-10-22 | yes | yes |
| 603-702 | BELL ATLANTIC MOBILE, INC | KINGSTON | 2002-07-08 | yes | yes |
| 603-703 | OTEL TELEKOM, INC. - NH | MANCHESTER | 2004-08-18 | yes | yes |
| 603-704 | AT&T | DERRY | – | yes | yes |
| 603-705 | Comcast | SALISBURY | 2009-11-17 | yes | yes |
| 603-706 | Windstream | RAYMOND | – | yes | yes |
| 603-707 | BELL ATLANTIC MOBILE, INC | MEREDITH | 2004-07-28 | yes | yes |
| 603-708 | Comcast | CANTERBURY | 2005-02-18 | yes | yes |
| 603-709 | Lumen | PLAINFIELD | 2004-08-17 | yes | yes |
| 603-710 | AT&T | WASHINGTON | 2021-03-02 | yes | yes |
| 603-712 | Verizon | PIKE | – | yes | yes |
| 603-713 | Onvoy | NASHUA | 2022-09-13 | yes | yes |
| 603-714 | BELL ATLANTIC MOBILE, INC | BEDFORD | 2001-11-19 | yes | yes |
| 603-715 | Comcast | CONCORD | – | yes | yes |
| 603-716 | BELL ATLANTIC MOBILE, INC | MANCHESTER | – | yes | yes |
| 603-717 | Windstream | CONCORD | – | yes | yes |
| 603-718 | BELL ATLANTIC MOBILE, INC | NASHUA | 2009-05-08 | yes | yes |
| 603-719 | FREEDOM RING COMMUNICATIONS, LLC | KEENE | – | yes | yes |
| 603-720 | Charter | TROY | 2023-02-27 | yes | yes |
| 603-721 | T-Mobile | MILFORD | 2002-07-08 | yes | yes |
| 603-722 | Bandwidth | MANCHESTER | 2008-05-14 | yes | yes |
| 603-723 | UNITED STATES CELLULAR - NH | BERLIN | – | yes | yes |
| 603-724 | Windstream | CONCORD | – | yes | yes |
| 603-725 | Lumen | TAMWORTH | – | yes | yes |
| 603-726 | Consolidated | CAMPTON | – | yes | yes |
| 603-727 | Windstream | LEBANON | – | yes | yes |
| 603-728 | Lumen | NOWOODSTOK | – | yes | yes |
| 603-729 | Verizon | TILTON | – | yes | yes |
| 603-730 | Verizon | NO CONWAY | – | yes | yes |
| 603-731 | BELL ATLANTIC MOBILE, INC | CONCORD | – | – | yes |
| 603-732 | Verizon | MILFORD | – | yes | yes |
| 603-733 | Lumen | NO CONWAY | – | yes | yes |
| 603-734 | Verizon | EPPING | – | yes | yes |
| 603-735 | KEARSARGE TEL. CO. | ANDOVER | – | yes | yes |
| 603-736 | Consolidated | EPSOM | – | yes | yes |
| 603-737 | FREEDOM RING COMMUNICATIONS, LLC | LACONIA | – | yes | yes |
| 603-738 | AT&T | CONCORD | – | – | yes |
| 603-739 | Verizon | NOWOODSTOK | – | yes | yes |
| 603-740 | Consolidated | DOVER | – | – | yes |
| 603-741 | Lumen | NEW BOSTON | – | yes | yes |
| 603-742 | Consolidated | DOVER | – | – | yes |
| 603-743 | Consolidated | DOVER | – | yes | yes |
| 603-744 | Consolidated | BRISTOL | – | yes | yes |
| 603-745 | Consolidated | NOWOODSTOK | – | yes | yes |
| 603-746 | MERRIMACK COUNTY TEL. CO. | CONTOOCOOK | – | yes | yes |
| 603-747 | Consolidated | WOODSVILLE | – | yes | yes |
| 603-748 | BELL ATLANTIC MOBILE, INC | WARNER | 2003-06-20 | yes | yes |
| 603-749 | Consolidated | DOVER | – | – | yes |
| 603-750 | FIDIUM ENTERPRISE SERVICES, LLC | DOVER | – | yes | yes |
| 603-751 | Verizon | PELHAM | – | yes | yes |
| 603-752 | Consolidated | BERLIN | – | – | yes |
| 603-753 | Consolidated | PENACOOK | – | yes | yes |
| 603-754 | FREEDOM RING COMMUNICATIONS, LLC | LANCASTER | – | yes | yes |
| 603-755 | Consolidated | FARMINGTON | – | yes | yes |
| 603-756 | Consolidated | WALPOLE | – | yes | yes |
| 603-757 | Windstream | KEENE | – | yes | yes |
| 603-758 | Windstream | HAMPTON | – | yes | yes |
| 603-759 | BELL ATLANTIC MOBILE, INC | NASHUA | – | – | yes |
| 603-760 | AT&T | SEABROOK | 2002-05-20 | yes | yes |
| 603-761 | FREEDOM RING COMMUNICATIONS, LLC | LITTLETON | – | yes | yes |
| 603-762 | BELL ATLANTIC MOBILE, INC | KEENE | – | yes | yes |
| 603-763 | Consolidated | SUNAPEE | – | yes | yes |
| 603-764 | Consolidated | WARREN | – | yes | yes |
| 603-765 | T-Mobile | NASHUA | – | yes | yes |
| 603-766 | FREEDOM RING COMMUNICATIONS, LLC | PORTSMOUTH | – | – | yes |
| 603-767 | AT&T | DOVER | – | – | yes |
| 603-768 | Consolidated | DANBURY | – | yes | yes |
| 603-769 | Lumen | MILFORD | – | yes | yes |
| 603-770 | BELL ATLANTIC MOBILE, INC | EXETER | – | – | yes |
| 603-771 | Consolidated | MANCHESTER | – | – | yes |
| 603-772 | Consolidated | EXETER | – | – | yes |
| 603-773 | Consolidated | EXETER | – | yes | yes |
| 603-774 | DUNBARTON TEL. CO. | DUNBARTON | – | – | yes |
| 603-775 | Consolidated | EXETER | – | yes | yes |
| 603-776 | UNION TEL. CO. | BARNSTEAD | – | yes | yes |
| 603-777 | Consolidated | EXETER | – | yes | yes |
| 603-778 | Consolidated | EXETER | – | – | yes |
| 603-779 | Verizon | PLYMOUTH | – | yes | yes |
| 603-780 | Lumen | CANAAN | – | yes | yes |
| 603-781 | AT&T | DOVER | – | – | yes |
| 603-782 | Lumen | MANCHESTER | – | yes | yes |
| 603-783 | Consolidated | CANTERBURY | – | yes | yes |
| 603-784 | Verizon | PETERBROGH | – | yes | yes |
| 603-785 | AT&T | MANCHESTER | – | – | yes |
| 603-786 | Consolidated | RUMNEY | – | yes | yes |
| 603-787 | Consolidated | WOODSVILLE | – | yes | yes |
| 603-788 | Consolidated | LANCASTER | – | yes | yes |
| 603-789 | FREEDOM RING COMMUNICATIONS, LLC | DANBURY | – | yes | yes |
| 603-790 | BELL ATLANTIC MOBILE, INC | W LEBANON | 2002-05-20 | yes | yes |
| 603-791 | Consolidated | NASHUA | – | yes | yes |
| 603-792 | FREEDOM RING COMMUNICATIONS, LLC | MANCHESTER | – | – | yes |
| 603-793 | T-Mobile | EXETER | 2002-05-20 | yes | yes |
| 603-794 | AT&T | LACONIA | 2023-08-11 | yes | yes |
| 603-795 | Consolidated | LYME | – | yes | yes |
| 603-796 | KEARSARGE TEL. CO. | BOSCAWEN | – | yes | yes |
| 603-797 | Verizon | PLAISTOW | – | yes | yes |
| 603-798 | KEARSARGE TEL. CO. | CHICHESTER | – | yes | yes |
| 603-799 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-800 | FRACTEL, LLC | MEREDITH | 2019-12-09 | yes | yes |
| 603-801 | BELL ATLANTIC MOBILE, INC | MILFORD | 2001-03-16 | yes | yes |
| 603-802 | Onvoy | CONCORD | 2022-09-13 | yes | yes |
| 603-803 | Lumen | KEENE | 2016-10-20 | yes | yes |
| 603-804 | Dish | DOVER | 2023-08-31 | yes | yes |
| 603-805 | Verizon | CONCORD | 2023-10-17 | yes | yes |
| 603-808 | Comcast | ANTRIM | 2009-11-23 | yes | yes |
| 603-809 | BELL ATLANTIC MOBILE, INC | NASHUA | 2007-03-13 | yes | yes |
| 603-810 | Telnyx | NASHUA | 2021-06-01 | yes | yes |
| 603-812 | BELL ATLANTIC MOBILE, INC | PORTSMOUTH | – | yes | yes |
| 603-813 | IDT AMERICA, CORP. - NH | CTRBARNSTE | 2009-10-30 | yes | yes |
| 603-814 | Comcast | SEABROOK | 2010-07-30 | yes | yes |
| 603-815 | AT&T | DURHAM | 2007-12-06 | yes | yes |
| 603-816 | FREEDOM RING COMMUNICATIONS, LLC | NASHUA | – | yes | yes |
| 603-817 | T-Mobile | DOVER | 2001-12-19 | yes | yes |
| 603-818 | T-Mobile | DERRY | 2002-07-08 | yes | yes |
| 603-819 | Lumen | PLAISTOW | – | yes | yes |
| 603-820 | T-Mobile | MERRIMACK | 2008-03-10 | yes | yes |
| 603-821 | Windstream | NASHUA | – | yes | yes |
| 603-822 | Windstream | ROCHESTER | – | yes | yes |
| 603-823 | Consolidated | FRANCONIA | – | yes | yes |
| 603-824 | Verizon | SALEM | – | yes | yes |
| 603-825 | TON80 COMMUNICATIONS, LLC | MANCHESTER | 2022-01-13 | yes | yes |
| 603-826 | Consolidated | CHARLESTN | – | yes | yes |
| 603-827 | Consolidated | HARRISVL | – | yes | yes |
| 603-828 | BELL ATLANTIC MOBILE, INC | PORTSMOUTH | 2002-01-22 | yes | yes |
| 603-829 | Verizon | SUNAPEE | – | yes | yes |
| 603-831 | BELL ATLANTIC MOBILE, INC | GREENFIELD | 2004-12-14 | yes | yes |
| 603-832 | Windstream | LACONIA | – | yes | yes |
| 603-833 | BELL ATLANTIC MOBILE, INC | ROCHESTER | 2004-10-05 | yes | yes |
| 603-834 | Windstream | DOVER | – | yes | yes |
| 603-835 | Consolidated | ALSTEAD | – | yes | yes |
| 603-836 | Comcast | MANCHESTER | 2002-05-20 | yes | yes |
| 603-837 | Consolidated | WHITEFIELD | – | yes | yes |
| 603-838 | Consolidated | LISBON | – | yes | yes |
| 603-839 | Charter | FARMINGTON | – | yes | yes |
| 603-840 | Comcast | EPSOM | 2009-11-16 | yes | yes |
| 603-841 | Comcast | SOMERSWTH | – | yes | yes |
| 603-842 | Windstream | DOVER | – | yes | yes |
| 603-843 | FREEDOM RING COMMUNICATIONS, LLC | NEWPORT | – | yes | yes |
| 603-845 | Windstream | DERRY | – | yes | yes |
| 603-846 | Consolidated | TWIN MT | – | yes | yes |
| 603-847 | Consolidated | SULLIVAN | – | yes | yes |
| 603-848 | UNITED STATES CELLULAR - NH | CONCORD | – | yes | yes |
| 603-850 | AT&T | LISBON | 2021-09-20 | yes | yes |
| 603-851 | BELL ATLANTIC MOBILE, INC | MANCHESTER | – | yes | yes |
| 603-852 | T-Mobile | KEENE | – | yes | yes |
| 603-853 | FREEDOM RING COMMUNICATIONS, LLC | WOODSVILLE | – | yes | yes |
| 603-854 | AT&T | MANCHESTER | 2002-12-06 | yes | yes |
| 603-855 | IDT AMERICA, CORP. - NH | ALTON | 2009-10-30 | yes | yes |
| 603-856 | Windstream | CONCORD | – | yes | yes |
| 603-857 | LEAP TELECOM, LLC | SUNCOOK | 2022-04-21 | yes | yes |
| 603-858 | T-Mobile | MANCHESTER | – | yes | yes |
| 603-859 | UNION TEL. CO. | NEW DURHAM | – | yes | yes |
| 603-860 | BELL ATLANTIC MOBILE, INC | MANCHESTER | – | – | yes |
| 603-861 | Verizon | TAMWORTH | – | yes | yes |
| 603-862 | Windstream | DURHAM | 2001-04-26 | – | yes |
| 603-863 | Consolidated | NEWPORT | – | – | yes |
| 603-864 | Consolidated | NASHUA | – | yes | yes |
| 603-865 | Consolidated | NEWPORT | – | yes | yes |
| 603-866 | T-Mobile | DOVER | – | yes | yes |
| 603-867 | AT&T | MANCHESTER | – | – | yes |
| 603-868 | Consolidated | DURHAM | – | – | yes |
| 603-869 | Consolidated | BETHLEHEM | – | yes | yes |
| 603-870 | Consolidated | SALEM | – | – | yes |
| 603-871 | Lumen | SANBORNVL | – | yes | yes |
| 603-872 | IDT AMERICA, CORP. - NH | GLNTNIRWRS | 2009-10-30 | yes | yes |
| 603-873 | Lumen | SUNAPEE | – | yes | yes |
| 603-874 | Lumen | MONROE | – | yes | yes |
| 603-875 | UNION TEL. CO. | ALTON | – | yes | yes |
| 603-876 | Consolidated | MARLBOROGH | – | yes | yes |
| 603-877 | Comcast | NEW LONDON | 2009-11-17 | yes | yes |
| 603-878 | Consolidated | GREENVILLE | – | yes | yes |
| 603-879 | Consolidated | NASHUA | – | yes | yes |
| 603-880 | Telnyx | NASHUA | – | yes | yes |
| 603-881 | Consolidated | NASHUA | – | yes | yes |
| 603-882 | Consolidated | NASHUA | – | – | yes |
| 603-883 | Consolidated | NASHUA | – | – | yes |
| 603-884 | Consolidated | NASHUA | – | yes | yes |
| 603-885 | Consolidated | NASHUA | – | – | yes |
| 603-886 | Consolidated | NASHUA | – | – | yes |
| 603-887 | GRANITE STATE TEL., INC. | CHESTER | – | – | yes |
| 603-888 | Consolidated | NASHUA | – | – | yes |
| 603-889 | Consolidated | NASHUA | – | – | yes |
| 603-890 | Consolidated | SALEM | – | – | yes |
| 603-891 | Consolidated | NASHUA | – | – | yes |
| 603-892 | T-Mobile | CONCORD | – | yes | yes |
| 603-893 | Consolidated | SALEM | – | – | yes |
| 603-894 | Consolidated | SALEM | – | – | yes |
| 603-895 | Consolidated | RAYMOND | – | yes | yes |
| 603-896 | Consolidated | SALEM | – | yes | yes |
| 603-897 | Consolidated | NASHUA | – | yes | yes |
| 603-898 | Consolidated | SALEM | – | – | yes |
| 603-899 | Consolidated | RINDGE | – | yes | yes |
| 603-900 | FRACTEL, LLC | NEWPORT | 2020-06-15 | yes | yes |
| 603-901 | Verizon | CONWAY | 2016-02-26 | yes | yes |
| 603-902 | Comcast | SUTTON | 2009-11-17 | yes | yes |
| 603-903 | BELL ATLANTIC MOBILE, INC | KEENE | – | yes | yes |
| 603-904 | OTEL TELEKOM, INC. - NH | WALPOLE | 2005-08-22 | yes | yes |
| 603-905 | OTEL TELEKOM, INC. - NH | BARRINGTON | 2006-09-20 | yes | yes |
| 603-906 | IDT AMERICA, CORP. - NH | BARNSTEAD | 2009-10-30 | yes | yes |
| 603-910 | Windstream | HAMPTON | – | yes | yes |
| 603-912 | TERRA NOVA TELECOM INC. | SALEM | – | yes | yes |
| 603-913 | Windstream | MERRIMACK | – | yes | yes |
| 603-915 | BELL ATLANTIC MOBILE, INC | GORHAM | 2002-02-22 | yes | yes |
| 603-916 | T-Mobile | MEREDITH | 2024-01-23 | yes | yes |
| 603-918 | BELL ATLANTIC MOBILE, INC | HAMPTON | 2002-04-19 | yes | yes |
| 603-919 | BELL ATLANTIC MOBILE, INC | ROCHESTER | 2023-07-05 | yes | yes |
| 603-921 | BELL ATLANTIC MOBILE, INC | NASHUA | 2009-07-06 | yes | yes |
| 603-922 | Consolidated | NO STRATFD | – | yes | yes |
| 603-923 | Lumen | ROCHESTER | – | yes | yes |
| 603-924 | Consolidated | PETERBROGH | – | – | yes |
| 603-925 | FREEDOM RING COMMUNICATIONS, LLC | PETERBROGH | – | yes | yes |
| 603-926 | Consolidated | HAMPTON | – | – | yes |
| 603-927 | MERRIMACK COUNTY TEL. CO. | SUTTON | – | yes | yes |
| 603-928 | FREEDOM RING COMMUNICATIONS, LLC | SUNCOOK | – | yes | yes |
| 603-929 | Consolidated | HAMPTON | – | – | yes |
| 603-930 | AT&T | NASHUA | – | – | yes |
| 603-931 | Verizon | CONCORD | 2015-05-21 | yes | yes |
| 603-932 | Onvoy | MANCHESTER | – | yes | yes |
| 603-933 | BELL ATLANTIC MOBILE, INC | GREENFIELD | 2008-07-07 | yes | yes |
| 603-934 | Consolidated | FRANKLIN | – | – | yes |
| 603-935 | Comcast | MANCHESTER | – | yes | yes |
| 603-937 | BELL ATLANTIC MOBILE, INC | MEREDITH | 2008-06-06 | yes | yes |
| 603-938 | MERRIMACK COUNTY TEL. CO. | BRADFORD | – | yes | yes |
| 603-939 | Consolidated | EASTCONWAY | – | yes | yes |
| 603-941 | Verizon | WOLFEBORO | – | yes | yes |
| 603-942 | Consolidated | NORTHWOOD | – | yes | yes |
| 603-943 | T-Mobile | NASHUA | – | yes | yes |
| 603-944 | T-Mobile | SO HAMPTON | 2001-12-19 | yes | yes |
| 603-945 | Onvoy | MANCHESTER | 2007-08-01 | yes | yes |
| 603-947 | FREEDOM RING COMMUNICATIONS, LLC | PLYMOUTH | – | yes | yes |
| 603-948 | IDT AMERICA, CORP. - NH | ROCHESTER | 2008-02-26 | yes | yes |
| 603-951 | Lumen | MILAN | – | yes | yes |
| 603-952 | Lumen | SALEM | – | yes | yes |
| 603-953 | Windstream | DOVER | – | yes | yes |
| 603-956 | Vonage | PORTSMOUTH | 2022-07-21 | yes | yes |
| 603-957 | AT&T | PORTSMOUTH | 2002-01-22 | yes | yes |
| 603-960 | BELL ATLANTIC MOBILE, INC | CAMPTON | 2008-01-22 | yes | yes |
| 603-961 | Comcast | CHICHESTER | 2009-11-17 | yes | yes |
| 603-964 | Consolidated | RYE BEACH | – | yes | yes |
| 603-965 | Windstream | DERRY | – | yes | yes |
| 603-966 | T-Mobile | NASHUA | 2002-02-22 | yes | yes |
| 603-967 | Lumen | HAMPTON | – | yes | yes |
| 603-968 | Consolidated | ASHLAND | – | yes | yes |
| 603-969 | T-Mobile | PORTSMOUTH | 2002-05-20 | yes | yes |
| 603-970 | AT&T | DOVER | 2006-03-22 | yes | yes |
| 603-971 | FREEDOM RING COMMUNICATIONS, LLC | RINDGE | – | yes | yes |
| 603-973 | T-Mobile | ROCHESTER | 2002-05-20 | yes | yes |
| 603-974 | Comcast | PLAISTOW | – | yes | yes |
| 603-975 | Comcast | BOSCAWEN | 2009-11-16 | yes | yes |
| 603-977 | Comcast | ANDOVER | 2009-11-17 | yes | yes |
| 603-978 | AT&T | DOVER | 2001-03-16 | yes | yes |
| 603-986 | BELL ATLANTIC MOBILE, INC | NO CONWAY | 2002-04-19 | yes | yes |
| 603-988 | T-Mobile | PORTSMOUTH | 2001-10-17 | yes | yes |
| 603-989 | Consolidated | PIKE | – | yes | yes |
| 603-991 | BELL ATLANTIC MOBILE, INC | LITTLETON | 2002-02-22 | yes | yes |
| 603-992 | Lumen | DANBURY | – | yes | yes |
| 603-994 | FREEDOM RING COMMUNICATIONS, LLC | ROCHESTER | – | – | yes |
| 603-995 | T-Mobile | HENNIKER | 2002-08-09 | yes | yes |
| 603-996 | T-Mobile | PLYMOUTH | 2002-08-09 | yes | yes |
| 603-997 | T-Mobile | HAMPTON | 2002-08-09 | yes | yes |
| 603-998 | T-Mobile | LACONIA | 2002-07-08 | yes | yes |
| 603-999 | FRACTEL, LLC | SALEM | 2019-12-09 | yes | yes |
Frequently asked
How many prefixes does area code 603 have?
752 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,520 thousand-number ranges across 147 rate centers.
What do the first three digits after 603 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 603 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 603 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 602 of 603's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time