Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 860 prefixes
783 of the 786 possible NXX blocks are assigned in area code 860 (99.6% of capacity), spread across 58 rate centers and 22 holders. The largest holders are SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (325 blocks, 41.5%), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (63 blocks, 8.0%), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT (60 blocks, 7.7%). Grouped by brand, AT&T accounts for 433 blocks; brand-attributable holders cover 99% 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 2001-03-26 to 2026-10-12, with 15 blocks handed out in 2002 alone. 526 blocks (67%) 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. 1 assigned block (860) is not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 75 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
783 assigned blocks of 786
58 rate centers
22 holders of record
67% in thousands-block pooling
Largest holders in 860
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | AT&T | 325 | 41.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Verizon | 63 | 8% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | Verizon | 60 | 7.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CT | AT&T | 56 | 7.2% |
| PAETEC ITEL, LLC | Windstream | 50 | 6.4% |
| NEW CINGULAR WIRELESS PCS, LLC - DC | AT&T | 44 | 5.6% |
| METROPCS, INC. | T-Mobile | 29 | 3.7% |
| OMNIPOINT COMMUNICATIONS, INC. - CT | T-Mobile | 28 | 3.6% |
| LEVEL 3 COMMUNICATIONS, LLC - CT | Lumen | 28 | 3.6% |
| COMCAST IP PHONE, LLC | Comcast | 26 | 3.3% |
| ONVOY, LLC - CT | Onvoy | 17 | 2.2% |
| SPOK, INC. | Spok | 12 | 1.5% |
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.
HARTFORD 260NEW LONDON 40NORWICH 35MIDDLETOWN 28NEWBRITAIN 26WINDSOR 20FARMINGTON 20MANCHESTER 20WILLIMNTIC 19SOUTHINGTN 19ENFIELD 17GLASTONBY 17SIMSBURY 16TORRINGTON 15OLD SAYBRK 15WINDSORLKS 15BRISTOL 15NEWMILFORD 12PUTNAM 11ROCKVILLE 10HARWINTON 9STORRS 9DEEP RIVER 8PLAINVILLE 8MYSTIC 7WATERTOWN 7CORNWALL 6E HAMPTON 6WINSTED 5DANIELSON 5COLUMBIA 4PLAINFIELD 4CANTON 4LITCHFIELD 4LEDYARD 4NIANTIC 4STAFFD SPG 4COVENTRY 4CLINTON 4THOMASTON 3HADDAM 3CANAAN 3SHARON 3JEWETTCITY 3LYME 3LEBANON 3PAWCATUCK 3COLCHESTER 3ESSEX 3MOODUS 3
All 783 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 |
|---|---|---|---|---|---|
| 860-200 | Onvoy | HARTFORD | 2015-11-23 | yes | yes |
| 860-201 | Windstream | TORRINGTON | – | yes | yes |
| 860-202 | AT&T | HARTFORD | – | – | yes |
| 860-204 | AT&T | NORWICH | – | yes | yes |
| 860-205 | AT&T | HARTFORD | – | – | yes |
| 860-206 | Comcast | HARTFORD | – | yes | yes |
| 860-207 | Verizon | WILLIMNTIC | 2013-02-27 | yes | yes |
| 860-208 | AT&T | WILLIMNTIC | – | – | yes |
| 860-209 | T-Mobile | HARTFORD | 2002-08-01 | yes | yes |
| 860-210 | AT&T | NEWMILFORD | – | yes | yes |
| 860-212 | AT&T | HARTFORD | – | – | yes |
| 860-213 | T-Mobile | NORWICH | – | yes | yes |
| 860-214 | Verizon | HARTFORD | – | – | yes |
| 860-215 | Verizon | NORWICH | 2011-12-06 | yes | yes |
| 860-216 | Comcast | HARTFORD | – | yes | yes |
| 860-217 | Comcast | SIMSBURY | – | yes | yes |
| 860-218 | Windstream | HARTFORD | 2004-02-12 | yes | yes |
| 860-219 | Comcast | WINDSOR | – | yes | yes |
| 860-220 | American Messaging | HARTFORD | – | – | yes |
| 860-221 | AT&T | HARTFORD | – | yes | yes |
| 860-222 | Bandwidth | NORWICH | 2010-08-23 | yes | yes |
| 860-223 | AT&T | NEWBRITAIN | – | – | yes |
| 860-224 | AT&T | NEWBRITAIN | – | – | yes |
| 860-225 | AT&T | NEWBRITAIN | – | – | yes |
| 860-226 | Verizon | HARTFORD | – | – | yes |
| 860-227 | Verizon | OLD SAYBRK | – | – | yes |
| 860-228 | AT&T | COLUMBIA | – | – | yes |
| 860-229 | AT&T | NEWBRITAIN | – | – | yes |
| 860-230 | AT&T | PLAINFIELD | – | yes | yes |
| 860-231 | AT&T | HARTFORD | – | – | yes |
| 860-232 | AT&T | HARTFORD | – | – | yes |
| 860-233 | AT&T | HARTFORD | – | – | yes |
| 860-234 | T-Mobile | WILLIMNTIC | – | yes | yes |
| 860-235 | Verizon | NEW LONDON | – | – | yes |
| 860-236 | AT&T | HARTFORD | – | – | yes |
| 860-237 | Lumen | NORWICH | – | yes | yes |
| 860-238 | Windstream | WINSTED | – | yes | yes |
| 860-239 | Windstream | ENFIELD | – | yes | yes |
| 860-240 | AT&T | HARTFORD | – | – | yes |
| 860-241 | AT&T | HARTFORD | – | – | yes |
| 860-242 | AT&T | HARTFORD | – | – | yes |
| 860-243 | AT&T | HARTFORD | – | – | yes |
| 860-244 | AT&T | HARTFORD | – | yes | yes |
| 860-245 | AT&T | MYSTIC | – | yes | yes |
| 860-246 | AT&T | HARTFORD | – | – | yes |
| 860-247 | AT&T | HARTFORD | – | yes | yes |
| 860-248 | Lumen | CORNWALL | – | yes | yes |
| 860-249 | AT&T | HARTFORD | – | yes | yes |
| 860-250 | T-Mobile | HARTFORD | – | yes | yes |
| 860-251 | AT&T | HARTFORD | – | yes | yes |
| 860-252 | AT&T | HARTFORD | – | – | yes |
| 860-253 | AT&T | ENFIELD | – | yes | yes |
| 860-254 | Verizon | WINDSORLKS | – | yes | yes |
| 860-255 | Verizon | FARMINGTON | – | yes | yes |
| 860-256 | Verizon | HARTFORD | – | yes | yes |
| 860-257 | AT&T | HARTFORD | – | yes | yes |
| 860-258 | AT&T | HARTFORD | – | yes | yes |
| 860-259 | Verizon | NEWBRITAIN | – | yes | yes |
| 860-260 | American Messaging | HARTFORD | – | – | yes |
| 860-261 | Verizon | BRISTOL | – | yes | yes |
| 860-262 | Verizon | MIDDLETOWN | – | yes | yes |
| 860-263 | Verizon | HARTFORD | – | yes | yes |
| 860-264 | Verizon | SIMSBURY | – | yes | yes |
| 860-265 | Verizon | ENFIELD | – | yes | yes |
| 860-266 | Verizon | GLASTONBY | – | yes | yes |
| 860-267 | AT&T | E HAMPTON | – | yes | yes |
| 860-268 | T-Mobile | MANCHESTER | 2002-09-03 | yes | yes |
| 860-269 | Verizon | FARMINGTON | – | yes | yes |
| 860-270 | AT&T | HARTFORD | – | yes | yes |
| 860-271 | AT&T | NEW LONDON | – | yes | yes |
| 860-272 | AT&T | ENFIELD | – | yes | yes |
| 860-273 | AT&T | HARTFORD | – | – | yes |
| 860-274 | AT&T | WATERTOWN | – | – | yes |
| 860-275 | AT&T | HARTFORD | – | – | yes |
| 860-276 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-277 | AT&T | HARTFORD | – | – | yes |
| 860-278 | AT&T | HARTFORD | – | yes | yes |
| 860-279 | American Messaging | HARTFORD | – | – | yes |
| 860-280 | AT&T | HARTFORD | – | yes | yes |
| 860-281 | T-Mobile | MANCHESTER | – | yes | yes |
| 860-282 | AT&T | HARTFORD | – | – | yes |
| 860-283 | AT&T | THOMASTON | – | – | yes |
| 860-284 | AT&T | FARMINGTON | – | yes | yes |
| 860-285 | AT&T | WINDSOR | – | – | yes |
| 860-286 | AT&T | HARTFORD | – | – | yes |
| 860-287 | Verizon | NEW LONDON | 2002-10-22 | yes | yes |
| 860-288 | Lumen | MANCHESTER | – | yes | yes |
| 860-289 | AT&T | HARTFORD | – | – | yes |
| 860-290 | AT&T | HARTFORD | – | – | yes |
| 860-291 | AT&T | HARTFORD | – | – | yes |
| 860-292 | AT&T | WINDSORLKS | – | yes | yes |
| 860-293 | AT&T | HARTFORD | – | – | yes |
| 860-294 | Verizon | TORRINGTON | – | yes | yes |
| 860-295 | AT&T | E HAMPTON | – | yes | yes |
| 860-296 | AT&T | HARTFORD | – | – | yes |
| 860-297 | AT&T | HARTFORD | – | yes | yes |
| 860-298 | AT&T | WINDSOR | – | – | yes |
| 860-299 | AT&T | HARTFORD | – | yes | yes |
| 860-300 | Verizon | NORWICH | 2016-01-28 | yes | yes |
| 860-301 | AT&T | MIDDLETOWN | – | – | yes |
| 860-302 | AT&T | SOUTHINGTN | – | – | yes |
| 860-303 | AT&T | NORWICH | – | – | yes |
| 860-304 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-305 | Verizon | HARTFORD | – | – | yes |
| 860-306 | Verizon | HARTFORD | – | – | yes |
| 860-307 | AT&T | HARWINTON | – | – | yes |
| 860-308 | AT&T | HARTFORD | – | yes | yes |
| 860-309 | AT&T | HARWINTON | – | – | yes |
| 860-310 | Comcast | HARTFORD | 2012-04-23 | yes | yes |
| 860-312 | AT&T | NORWICH | – | – | yes |
| 860-313 | AT&T | HARTFORD | – | yes | yes |
| 860-314 | AT&T | BRISTOL | – | – | yes |
| 860-315 | Verizon | PUTNAM | – | yes | yes |
| 860-316 | Verizon | MIDDLETOWN | – | yes | yes |
| 860-317 | Verizon | PLAINFIELD | – | yes | yes |
| 860-318 | Verizon | CORNWALL | – | yes | yes |
| 860-319 | Verizon | NORWICH | – | yes | yes |
| 860-320 | American Messaging | HARTFORD | – | – | yes |
| 860-321 | Verizon | FARMINGTON | – | yes | yes |
| 860-322 | Verizon | DEEP RIVER | – | yes | yes |
| 860-323 | Verizon | SIMSBURY | – | yes | yes |
| 860-324 | Verizon | HARTFORD | 2002-10-22 | yes | yes |
| 860-325 | Verizon | SIMSBURY | – | yes | yes |
| 860-326 | AT&T | NEW LONDON | – | yes | yes |
| 860-327 | Verizon | MANCHESTER | – | yes | yes |
| 860-328 | T-Mobile | GLASTONBY | 2001-05-01 | yes | yes |
| 860-329 | Verizon | SOUTHINGTN | – | yes | yes |
| 860-330 | Spok | HARTFORD | – | – | yes |
| 860-331 | Verizon | HARTFORD | – | yes | yes |
| 860-332 | Spok | HARTFORD | – | – | yes |
| 860-333 | AT&T | NEW LONDON | – | yes | yes |
| 860-334 | Verizon | NORWICH | – | – | yes |
| 860-335 | Verizon | HARTFORD | – | yes | yes |
| 860-336 | AT&T | WILLIMNTIC | – | yes | yes |
| 860-337 | Verizon | COLUMBIA | – | yes | yes |
| 860-338 | Verizon | GLASTONBY | – | yes | yes |
| 860-339 | Verizon | OLD SAYBRK | – | yes | yes |
| 860-340 | American Messaging | HARTFORD | – | – | yes |
| 860-341 | Verizon | STORRS | – | yes | yes |
| 860-342 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-343 | AT&T | MIDDLETOWN | – | – | yes |
| 860-344 | AT&T | MIDDLETOWN | – | – | yes |
| 860-345 | AT&T | HADDAM | – | yes | yes |
| 860-346 | AT&T | MIDDLETOWN | – | – | yes |
| 860-347 | AT&T | MIDDLETOWN | – | – | yes |
| 860-348 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-349 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-350 | AT&T | NEWMILFORD | – | – | yes |
| 860-351 | Verizon | PLAINVILLE | – | yes | yes |
| 860-352 | Verizon | CANTON | – | yes | yes |
| 860-353 | AT&T | HARTFORD | 2007-07-02 | yes | yes |
| 860-354 | AT&T | NEWMILFORD | – | – | yes |
| 860-355 | AT&T | NEWMILFORD | – | – | yes |
| 860-356 | Verizon | NEWBRITAIN | – | yes | yes |
| 860-357 | Verizon | NEWBRITAIN | – | yes | yes |
| 860-358 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-359 | Verizon | COLUMBIA | – | yes | yes |
| 860-360 | Spok | HARTFORD | – | – | yes |
| 860-361 | Altice | LITCHFIELD | – | yes | yes |
| 860-362 | AT&T | CANAAN | – | yes | yes |
| 860-363 | Spok | HARTFORD | – | – | yes |
| 860-364 | AT&T | SHARON | – | yes | yes |
| 860-365 | AT&T | E HAMPTON | – | yes | yes |
| 860-366 | Spok | HARTFORD | – | – | yes |
| 860-367 | AT&T | NORWICH | – | yes | yes |
| 860-368 | AT&T | GLASTONBY | – | yes | yes |
| 860-369 | Spok | HARTFORD | – | – | yes |
| 860-370 | Comcast | WINDSORLKS | – | yes | yes |
| 860-371 | AT&T | HARTFORD | – | yes | yes |
| 860-372 | AT&T | HARTFORD | – | yes | yes |
| 860-373 | Verizon | NORWICH | – | yes | yes |
| 860-374 | Verizon | DEEP RIVER | – | yes | yes |
| 860-375 | Verizon | ROCKVILLE | – | yes | yes |
| 860-376 | AT&T | JEWETTCITY | – | – | yes |
| 860-377 | Verizon | WILLIMNTIC | – | – | yes |
| 860-378 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-379 | AT&T | WINSTED | – | – | yes |
| 860-380 | AT&T | HARTFORD | – | yes | yes |
| 860-381 | AT&T | LEDYARD | – | yes | yes |
| 860-382 | AT&T | PUTNAM | – | yes | yes |
| 860-383 | AT&T | NORWICH | – | yes | yes |
| 860-384 | Verizon | SOUTHINGTN | – | yes | yes |
| 860-385 | Onvoy | SOUTHINGTN | – | yes | yes |
| 860-386 | AT&T | WINDSORLKS | – | yes | yes |
| 860-387 | Verizon | TORRINGTON | – | yes | yes |
| 860-388 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-389 | AT&T | NEW LONDON | – | yes | yes |
| 860-390 | Peerless | LYME | 2013-04-11 | yes | yes |
| 860-391 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-392 | AT&T | SIMSBURY | – | yes | yes |
| 860-393 | AT&T | LITCHFIELD | – | yes | yes |
| 860-394 | AT&T | ENFIELD | – | yes | yes |
| 860-395 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-396 | AT&T | MYSTIC | – | – | yes |
| 860-397 | Verizon | SHARON | – | yes | yes |
| 860-398 | Lumen | MIDDLETOWN | – | yes | yes |
| 860-399 | AT&T | OLD SAYBRK | – | – | yes |
| 860-400 | Peerless | LEDYARD | 2013-04-11 | yes | yes |
| 860-401 | Onvoy | DANIELSON | 2024-03-12 | yes | yes |
| 860-402 | AT&T | HARTFORD | – | – | yes |
| 860-403 | AT&T | HARTFORD | – | – | yes |
| 860-404 | AT&T | FARMINGTON | – | yes | yes |
| 860-405 | AT&T | NEW LONDON | – | yes | yes |
| 860-406 | Verizon | SOUTHINGTN | – | yes | yes |
| 860-407 | Peerless | JEWETTCITY | 2013-04-11 | yes | yes |
| 860-408 | AT&T | SIMSBURY | – | – | yes |
| 860-409 | AT&T | FARMINGTON | – | – | yes |
| 860-410 | AT&T | PLAINVILLE | – | yes | yes |
| 860-412 | AT&T | DANIELSON | – | yes | yes |
| 860-413 | Comcast | SIMSBURY | – | yes | yes |
| 860-414 | Verizon | SOUTHINGTN | – | yes | yes |
| 860-415 | AT&T | MYSTIC | – | yes | yes |
| 860-416 | AT&T | HARTFORD | – | – | yes |
| 860-417 | AT&T | WATERTOWN | – | yes | yes |
| 860-418 | AT&T | HARTFORD | – | yes | yes |
| 860-419 | Lumen | CORNWALL | – | yes | yes |
| 860-420 | AT&T | STORRS | – | yes | yes |
| 860-421 | AT&T | CANTON | – | yes | yes |
| 860-422 | AT&T | HARTFORD | – | yes | yes |
| 860-423 | AT&T | WILLIMNTIC | – | – | yes |
| 860-424 | AT&T | HARTFORD | – | yes | yes |
| 860-425 | AT&T | NORWICH | – | yes | yes |
| 860-426 | Comcast | SOUTHINGTN | – | yes | yes |
| 860-427 | Windstream | STORRS | – | – | yes |
| 860-428 | Verizon | WILLIMNTIC | – | – | yes |
| 860-429 | AT&T | STORRS | – | – | yes |
| 860-430 | Comcast | GLASTONBY | – | yes | yes |
| 860-431 | AT&T | SIMSBURY | – | yes | yes |
| 860-432 | Comcast | MANCHESTER | – | yes | yes |
| 860-433 | AT&T | NEW LONDON | – | – | yes |
| 860-434 | AT&T | LYME | – | – | yes |
| 860-435 | AT&T | LAKEVILLE | – | yes | yes |
| 860-436 | Comcast | HARTFORD | – | yes | yes |
| 860-437 | AT&T | NEW LONDON | – | – | yes |
| 860-438 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-439 | AT&T | NEW LONDON | – | – | yes |
| 860-440 | AT&T | NEW LONDON | – | yes | yes |
| 860-441 | AT&T | NEW LONDON | – | – | yes |
| 860-442 | AT&T | NEW LONDON | – | – | yes |
| 860-443 | AT&T | NEW LONDON | – | – | yes |
| 860-444 | AT&T | NEW LONDON | – | – | yes |
| 860-445 | AT&T | NEW LONDON | – | – | yes |
| 860-446 | AT&T | NEW LONDON | – | yes | yes |
| 860-447 | AT&T | NEW LONDON | – | – | yes |
| 860-448 | AT&T | NEW LONDON | – | yes | yes |
| 860-449 | AT&T | NEW LONDON | – | yes | yes |
| 860-450 | AT&T | WILLIMNTIC | – | yes | yes |
| 860-451 | AT&T | NIANTIC | – | yes | yes |
| 860-452 | AT&T | KILLINGWTH | – | yes | yes |
| 860-453 | Comcast | CANAAN | – | yes | yes |
| 860-454 | AT&T | ROCKVILLE | – | yes | yes |
| 860-455 | AT&T | WILLIMNTIC | – | yes | yes |
| 860-456 | AT&T | WILLIMNTIC | – | – | yes |
| 860-457 | AT&T | PLAINFIELD | – | yes | yes |
| 860-458 | AT&T | STAFFD SPG | – | yes | yes |
| 860-459 | AT&T | TORRINGTON | – | yes | yes |
| 860-460 | Verizon | NEW LONDON | – | – | yes |
| 860-461 | Comcast | HARTFORD | – | yes | yes |
| 860-462 | Verizon | HARTFORD | – | yes | yes |
| 860-463 | Verizon | HARTFORD | – | – | yes |
| 860-464 | AT&T | LEDYARD | – | yes | yes |
| 860-465 | AT&T | WILLIMNTIC | – | yes | yes |
| 860-466 | AT&T | HARTFORD | – | yes | yes |
| 860-467 | AT&T | E HAMPTON | – | yes | yes |
| 860-468 | Charter | LEBANON | – | yes | yes |
| 860-469 | AT&T | WINSTED | – | yes | yes |
| 860-470 | Windstream | FARMINGTON | – | yes | yes |
| 860-471 | Verizon | HARTFORD | 2009-05-08 | yes | yes |
| 860-472 | Windstream | HARTFORD | 2020-11-10 | yes | yes |
| 860-473 | Spok | HARTFORD | – | – | yes |
| 860-474 | AT&T | MANCHESTER | 2003-07-08 | yes | yes |
| 860-477 | Charter | STORRS | 2004-12-14 | yes | yes |
| 860-478 | T-Mobile | HARTFORD | – | yes | yes |
| 860-479 | Comcast | PLAINVILLE | – | yes | yes |
| 860-480 | Verizon | TORRINGTON | – | yes | yes |
| 860-481 | Lumen | PUTNAM | – | yes | yes |
| 860-482 | AT&T | TORRINGTON | – | – | yes |
| 860-483 | Verizon | WATERTOWN | – | yes | yes |
| 860-484 | T-Mobile | THOMASTON | – | yes | yes |
| 860-485 | AT&T | HARWINTON | – | yes | yes |
| 860-486 | Windstream | STORRS | – | – | yes |
| 860-487 | AT&T | STORRS | – | yes | yes |
| 860-488 | Verizon | NEWMILFORD | – | yes | yes |
| 860-489 | AT&T | TORRINGTON | – | – | yes |
| 860-490 | Verizon | HARTFORD | – | – | yes |
| 860-491 | AT&T | TORRINGTON | – | yes | yes |
| 860-492 | AT&T | SHARON | – | yes | yes |
| 860-493 | AT&T | HARTFORD | – | – | yes |
| 860-494 | AT&T | GLASTONBY | – | yes | yes |
| 860-495 | Comcast | PAWCATUCK | – | yes | yes |
| 860-496 | AT&T | TORRINGTON | – | – | yes |
| 860-497 | AT&T | NOTHOMPSON | – | yes | yes |
| 860-498 | Charter | COVENTRY | – | yes | yes |
| 860-499 | AT&T | CORNWALL | – | yes | yes |
| 860-500 | Verizon | HARTFORD | 2016-06-21 | yes | yes |
| 860-501 | AT&T | NEW LONDON | 2002-11-04 | yes | yes |
| 860-502 | AT&T | HARTFORD | – | yes | yes |
| 860-503 | AT&T | HARTFORD | 2012-04-02 | yes | yes |
| 860-504 | Spok | HARTFORD | – | – | yes |
| 860-505 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-506 | AT&T | BRISTOL | – | yes | yes |
| 860-507 | AT&T | FARMINGTON | – | yes | yes |
| 860-508 | Verizon | HARTFORD | – | – | yes |
| 860-509 | AT&T | HARTFORD | – | yes | yes |
| 860-510 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-512 | AT&T | MANCHESTER | – | yes | yes |
| 860-513 | AT&T | HARTFORD | – | yes | yes |
| 860-514 | T-Mobile | NEW LONDON | – | – | yes |
| 860-515 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-516 | Lumen | BRISTOL | – | yes | yes |
| 860-517 | AT&T | PLAINVILLE | – | yes | yes |
| 860-518 | T-Mobile | NEWBRITAIN | – | – | yes |
| 860-519 | Comcast | HARTFORD | – | yes | yes |
| 860-520 | AT&T | HARTFORD | – | – | yes |
| 860-521 | AT&T | HARTFORD | – | – | yes |
| 860-522 | AT&T | HARTFORD | – | yes | yes |
| 860-523 | AT&T | HARTFORD | – | – | yes |
| 860-524 | AT&T | HARTFORD | – | – | yes |
| 860-525 | AT&T | HARTFORD | – | – | yes |
| 860-526 | AT&T | DEEP RIVER | – | yes | yes |
| 860-527 | AT&T | HARTFORD | – | – | yes |
| 860-528 | AT&T | HARTFORD | – | – | yes |
| 860-529 | AT&T | HARTFORD | – | – | yes |
| 860-530 | Comcast | COLUMBIA | – | yes | yes |
| 860-531 | AT&T | COLCHESTER | – | yes | yes |
| 860-532 | AT&T | DEEP RIVER | – | yes | yes |
| 860-533 | AT&T | MANCHESTER | – | yes | yes |
| 860-534 | AT&T | HARTFORD | – | yes | yes |
| 860-535 | AT&T | MYSTIC | – | yes | yes |
| 860-536 | AT&T | MYSTIC | – | – | yes |
| 860-537 | AT&T | COLCHESTER | – | – | yes |
| 860-538 | T-Mobile | NEWBRITAIN | 2002-09-03 | yes | yes |
| 860-539 | Verizon | HARTFORD | – | – | yes |
| 860-540 | Windstream | BRISTOL | – | yes | yes |
| 860-541 | AT&T | HARTFORD | – | yes | yes |
| 860-542 | AT&T | NORFOLK | – | yes | yes |
| 860-543 | AT&T | HARTFORD | – | yes | yes |
| 860-544 | Verizon | COVENTRY | – | yes | yes |
| 860-545 | AT&T | HARTFORD | – | – | yes |
| 860-546 | AT&T | CANTERBURY | – | yes | yes |
| 860-547 | AT&T | HARTFORD | – | – | yes |
| 860-548 | AT&T | HARTFORD | – | yes | yes |
| 860-549 | AT&T | HARTFORD | – | yes | yes |
| 860-550 | AT&T | HARTFORD | – | yes | yes |
| 860-551 | AT&T | XXXXXXXXXX | – | – | yes |
| 860-552 | Lumen | CLINTON | – | yes | yes |
| 860-553 | Windstream | STORRS | – | yes | yes |
| 860-554 | Verizon | HADDAM | – | yes | yes |
| 860-556 | AT&T | CANTERBURY | – | yes | yes |
| 860-557 | AT&T | HARTFORD | – | – | yes |
| 860-558 | Verizon | HARTFORD | – | – | yes |
| 860-559 | Verizon | HARTFORD | – | – | yes |
| 860-560 | AT&T | HARTFORD | – | yes | yes |
| 860-561 | AT&T | HARTFORD | – | – | yes |
| 860-562 | AT&T | ENFIELD | 2004-06-02 | yes | yes |
| 860-563 | AT&T | HARTFORD | – | – | yes |
| 860-564 | AT&T | PLAINFIELD | – | – | yes |
| 860-565 | AT&T | HARTFORD | – | – | yes |
| 860-566 | AT&T | HARTFORD | – | yes | yes |
| 860-567 | AT&T | LITCHFIELD | – | – | yes |
| 860-568 | AT&T | HARTFORD | – | – | yes |
| 860-569 | AT&T | HARTFORD | – | yes | yes |
| 860-570 | AT&T | HARTFORD | – | – | yes |
| 860-571 | AT&T | HARTFORD | – | yes | yes |
| 860-572 | AT&T | MYSTIC | – | yes | yes |
| 860-573 | Verizon | HARTFORD | – | – | yes |
| 860-574 | T-Mobile | NEW LONDON | 2009-12-03 | yes | yes |
| 860-575 | Verizon | OLD SAYBRK | – | yes | yes |
| 860-576 | Verizon | WILLIMNTIC | 2008-04-14 | yes | yes |
| 860-577 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-578 | Verizon | HARTFORD | 2008-10-23 | yes | yes |
| 860-579 | AT&T | HADDAM | – | yes | yes |
| 860-580 | AT&T | WINDSOR | 2006-11-22 | yes | yes |
| 860-581 | AT&T | ESSEX | – | yes | yes |
| 860-582 | AT&T | BRISTOL | – | – | yes |
| 860-583 | AT&T | BRISTOL | – | – | yes |
| 860-584 | AT&T | BRISTOL | – | – | yes |
| 860-585 | AT&T | BRISTOL | – | – | yes |
| 860-586 | AT&T | HARTFORD | – | – | yes |
| 860-587 | Spok | HARTFORD | – | – | yes |
| 860-588 | American Messaging | HARTFORD | – | – | yes |
| 860-589 | AT&T | BRISTOL | – | – | yes |
| 860-590 | Onvoy | WATERTOWN | – | yes | yes |
| 860-591 | Lumen | JEWETTCITY | – | yes | yes |
| 860-592 | AT&T | KENT | – | yes | yes |
| 860-593 | AT&T | HARTFORD | 2002-07-12 | – | yes |
| 860-594 | AT&T | HARTFORD | – | yes | yes |
| 860-595 | AT&T | HARTFORD | – | yes | yes |
| 860-596 | AT&T | LAKEVILLE | – | yes | yes |
| 860-597 | AT&T | HARTFORD | 2002-07-17 | – | yes |
| 860-598 | AT&T | LYME | – | yes | yes |
| 860-599 | AT&T | PAWCATUCK | – | – | yes |
| 860-600 | Bandwidth | LITCHFIELD | 2016-06-21 | yes | yes |
| 860-601 | T-Mobile | TORRINGTON | – | yes | yes |
| 860-602 | AT&T | WINDSOR | – | yes | yes |
| 860-603 | Comcast | COLCHESTER | 2012-04-27 | yes | yes |
| 860-604 | Verizon | HARTFORD | – | – | yes |
| 860-605 | AT&T | HARWINTON | – | yes | yes |
| 860-606 | Windstream | FARMINGTON | – | yes | yes |
| 860-607 | AT&T | WINDSOR | – | yes | yes |
| 860-608 | Verizon | NORWICH | – | – | yes |
| 860-609 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-610 | AT&T | HARTFORD | – | yes | yes |
| 860-612 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-613 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-614 | Verizon | HARTFORD | – | – | yes |
| 860-615 | AT&T | MOODUS | – | yes | yes |
| 860-616 | Verizon | HARTFORD | – | yes | yes |
| 860-617 | AT&T | WILLIMNTIC | – | – | yes |
| 860-618 | Verizon | TORRINGTON | – | yes | yes |
| 860-619 | AT&T | WASHINGTON | – | yes | yes |
| 860-620 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-621 | AT&T | SOUTHINGTN | – | – | yes |
| 860-622 | AT&T | HARTFORD | – | yes | yes |
| 860-623 | AT&T | WINDSORLKS | – | – | yes |
| 860-624 | AT&T | WINDSOR | 2008-01-15 | yes | yes |
| 860-625 | T-Mobile | NEW LONDON | – | yes | yes |
| 860-626 | AT&T | TORRINGTON | – | yes | yes |
| 860-627 | AT&T | WINDSORLKS | – | – | yes |
| 860-628 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-629 | AT&T | NEW LONDON | – | yes | yes |
| 860-630 | AT&T | PUTNAM | – | yes | yes |
| 860-631 | Windstream | WATERTOWN | – | yes | yes |
| 860-632 | AT&T | MIDDLETOWN | – | – | yes |
| 860-633 | AT&T | GLASTONBY | – | – | yes |
| 860-634 | T-Mobile | WILLIMNTIC | – | yes | yes |
| 860-635 | AT&T | MIDDLETOWN | – | – | yes |
| 860-636 | AT&T | MIDDLETOWN | – | – | yes |
| 860-637 | T-Mobile | SOUTHINGTN | – | yes | yes |
| 860-638 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-639 | Windstream | NORWICH | – | yes | yes |
| 860-640 | Windstream | WINDSOR | – | yes | yes |
| 860-641 | AT&T | BRISTOL | – | – | yes |
| 860-642 | AT&T | LEBANON | – | yes | yes |
| 860-643 | AT&T | MANCHESTER | – | – | yes |
| 860-644 | AT&T | MANCHESTER | – | – | yes |
| 860-645 | AT&T | MANCHESTER | – | – | yes |
| 860-646 | AT&T | MANCHESTER | – | – | yes |
| 860-647 | AT&T | MANCHESTER | – | – | yes |
| 860-648 | AT&T | MANCHESTER | – | yes | yes |
| 860-649 | AT&T | MANCHESTER | – | – | yes |
| 860-650 | Bandwidth | PAWCATUCK | 2014-06-26 | yes | yes |
| 860-651 | AT&T | SIMSBURY | – | – | yes |
| 860-652 | AT&T | GLASTONBY | – | yes | yes |
| 860-653 | AT&T | SIMSBURY | – | – | yes |
| 860-654 | AT&T | WINDSORLKS | – | – | yes |
| 860-655 | T-Mobile | HARTFORD | – | yes | yes |
| 860-656 | Windstream | HARTFORD | – | yes | yes |
| 860-657 | AT&T | GLASTONBY | – | yes | yes |
| 860-658 | AT&T | SIMSBURY | – | – | yes |
| 860-659 | AT&T | GLASTONBY | – | yes | yes |
| 860-660 | AT&T | HARTFORD | – | – | yes |
| 860-661 | Lumen | OLD SAYBRK | – | yes | yes |
| 860-662 | T-Mobile | ESSEX | – | yes | yes |
| 860-663 | AT&T | KILLINGWTH | – | yes | yes |
| 860-664 | AT&T | CLINTON | – | yes | yes |
| 860-665 | AT&T | HARTFORD | – | – | yes |
| 860-666 | AT&T | HARTFORD | – | – | yes |
| 860-667 | AT&T | HARTFORD | – | – | yes |
| 860-668 | AT&T | WINDSORLKS | – | – | yes |
| 860-669 | AT&T | CLINTON | – | – | yes |
| 860-670 | Verizon | HARTFORD | – | – | yes |
| 860-671 | AT&T | CORNWALL | – | yes | yes |
| 860-672 | AT&T | CORNWALL | – | yes | yes |
| 860-673 | AT&T | FARMINGTON | – | – | yes |
| 860-674 | AT&T | FARMINGTON | – | – | yes |
| 860-675 | AT&T | FARMINGTON | – | – | yes |
| 860-676 | AT&T | FARMINGTON | – | – | yes |
| 860-677 | AT&T | FARMINGTON | – | – | yes |
| 860-678 | AT&T | FARMINGTON | – | – | yes |
| 860-679 | AT&T | FARMINGTON | – | – | yes |
| 860-680 | T-Mobile | HARTFORD | – | yes | yes |
| 860-681 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-682 | AT&T | GLASTONBY | – | yes | yes |
| 860-683 | AT&T | WINDSOR | – | – | yes |
| 860-684 | AT&T | STAFFD SPG | – | – | yes |
| 860-685 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-686 | AT&T | NEW LONDON | – | – | yes |
| 860-687 | AT&T | WINDSOR | – | – | yes |
| 860-688 | AT&T | WINDSOR | – | – | yes |
| 860-689 | AT&T | HARWINTON | – | yes | yes |
| 860-690 | AT&T | HARTFORD | – | – | yes |
| 860-691 | AT&T | NIANTIC | – | yes | yes |
| 860-692 | AT&T | HARTFORD | – | yes | yes |
| 860-693 | AT&T | CANTON | – | – | yes |
| 860-694 | AT&T | NEW LONDON | – | yes | yes |
| 860-695 | AT&T | HARTFORD | – | – | yes |
| 860-696 | AT&T | HARTFORD | – | – | yes |
| 860-697 | Windstream | WINDSOR | – | yes | yes |
| 860-698 | Comcast | ENFIELD | – | yes | yes |
| 860-699 | Bandwidth | LEDYARD | 2021-11-22 | yes | yes |
| 860-701 | AT&T | NEW LONDON | – | yes | yes |
| 860-702 | AT&T | HARTFORD | – | yes | yes |
| 860-703 | AT&T | FARMINGTON | – | yes | yes |
| 860-704 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-705 | AT&T | NORWICH | – | – | yes |
| 860-706 | Verizon | HARTFORD | – | yes | yes |
| 860-707 | Verizon | HARTFORD | – | yes | yes |
| 860-708 | Spok | HARTFORD | – | – | yes |
| 860-709 | AT&T | HARTFORD | 2011-03-03 | yes | yes |
| 860-710 | T-Mobile | NORWICH | 2001-03-26 | yes | yes |
| 860-712 | AT&T | HARTFORD | – | – | yes |
| 860-713 | Verizon | HARTFORD | – | yes | yes |
| 860-714 | AT&T | HARTFORD | – | – | yes |
| 860-715 | AT&T | NEW LONDON | – | – | yes |
| 860-716 | Verizon | HARTFORD | – | – | yes |
| 860-717 | AT&T | NEWMILFORD | 2010-03-15 | yes | yes |
| 860-718 | Onvoy | DEEP RIVER | – | yes | yes |
| 860-719 | T-Mobile | HARTFORD | 2008-10-03 | yes | yes |
| 860-720 | American Messaging | HARTFORD | – | – | yes |
| 860-721 | AT&T | HARTFORD | – | – | yes |
| 860-722 | AT&T | HARTFORD | – | yes | yes |
| 860-723 | AT&T | HARTFORD | – | – | yes |
| 860-724 | AT&T | HARTFORD | – | yes | yes |
| 860-725 | AT&T | HARTFORD | – | yes | yes |
| 860-726 | AT&T | HARTFORD | – | yes | yes |
| 860-727 | AT&T | HARTFORD | – | yes | yes |
| 860-728 | AT&T | HARTFORD | – | yes | yes |
| 860-729 | Verizon | HARTFORD | – | – | yes |
| 860-730 | Windstream | MANCHESTER | – | yes | yes |
| 860-731 | AT&T | WINDSOR | – | yes | yes |
| 860-732 | AT&T | NEW LONDON | – | – | yes |
| 860-733 | Lumen | HARWINTON | – | yes | yes |
| 860-734 | Windstream | GLASTONBY | – | yes | yes |
| 860-735 | Windstream | SIMSBURY | – | yes | yes |
| 860-736 | Windstream | SOUTHINGTN | – | yes | yes |
| 860-737 | AT&T | WINDSOR | – | yes | yes |
| 860-738 | AT&T | WINSTED | – | – | yes |
| 860-739 | AT&T | NIANTIC | – | – | yes |
| 860-740 | Windstream | MIDDLETOWN | – | yes | yes |
| 860-741 | AT&T | ENFIELD | – | – | yes |
| 860-742 | AT&T | COVENTRY | – | – | yes |
| 860-743 | Onvoy | MANCHESTER | 2022-10-25 | yes | yes |
| 860-744 | Peerless | CLINTON | 2013-04-11 | yes | yes |
| 860-745 | AT&T | ENFIELD | – | – | yes |
| 860-746 | AT&T | ENFIELD | – | yes | yes |
| 860-747 | AT&T | PLAINVILLE | – | – | yes |
| 860-748 | Lumen | HARTFORD | – | yes | yes |
| 860-749 | AT&T | ENFIELD | – | – | yes |
| 860-750 | AT&T | NEWMILFORD | 2014-07-21 | yes | yes |
| 860-751 | Windstream | FARMINGTON | – | yes | yes |
| 860-752 | Windstream | WINDSORLKS | – | yes | yes |
| 860-753 | AT&T | PUTNAM | – | yes | yes |
| 860-754 | Verizon | MIDDLETOWN | – | yes | yes |
| 860-755 | AT&T | HARTFORD | – | – | yes |
| 860-756 | AT&T | HARTFORD | – | yes | yes |
| 860-757 | AT&T | HARTFORD | – | yes | yes |
| 860-758 | Onvoy | WINDSORLKS | – | yes | yes |
| 860-759 | AT&T | MIDDLETOWN | 2002-05-30 | yes | yes |
| 860-760 | Windstream | HARTFORD | 2001-10-25 | yes | yes |
| 860-761 | Windstream | HARTFORD | – | yes | yes |
| 860-762 | AQUIS COMMUNICATIONS, INC. | HARTFORD | 2004-09-10 | – | yes |
| 860-763 | AT&T | ENFIELD | – | – | yes |
| 860-764 | Comcast | CANTON | – | yes | yes |
| 860-765 | AT&T | HARTFORD | – | – | yes |
| 860-766 | AT&T | BRISTOL | – | – | yes |
| 860-767 | AT&T | ESSEX | – | – | yes |
| 860-768 | AT&T | HARTFORD | – | yes | yes |
| 860-769 | AT&T | HARTFORD | – | – | yes |
| 860-770 | Windstream | NEWBRITAIN | – | yes | yes |
| 860-771 | AT&T | WILLIMNTIC | 2010-09-21 | yes | yes |
| 860-772 | IDT AMERICA, CORP. - CT | NEW LONDON | 2008-10-01 | yes | yes |
| 860-773 | Windstream | FARMINGTON | – | yes | yes |
| 860-774 | AT&T | DANIELSON | – | – | yes |
| 860-775 | Onvoy | E HAMPTON | – | yes | yes |
| 860-776 | T-Mobile | ENFIELD | – | yes | yes |
| 860-777 | Lumen | FARMINGTON | – | yes | yes |
| 860-778 | T-Mobile | HARTFORD | – | yes | yes |
| 860-779 | AT&T | DANIELSON | – | – | yes |
| 860-780 | Lumen | GLASTONBY | – | yes | yes |
| 860-781 | Windstream | GLASTONBY | – | yes | yes |
| 860-782 | Lumen | HARWINTON | – | yes | yes |
| 860-783 | Onvoy | MANCHESTER | – | yes | yes |
| 860-784 | Lumen | SIMSBURY | – | yes | yes |
| 860-785 | NUSO, LLC | HARTFORD | 2013-04-08 | yes | yes |
| 860-786 | Lumen | WILLIMNTIC | – | yes | yes |
| 860-787 | Lumen | WINDSOR | – | yes | yes |
| 860-788 | Bandwidth | MIDDLETOWN | – | yes | yes |
| 860-789 | Lumen | WINDSORLKS | – | yes | yes |
| 860-790 | T-Mobile | DEEP RIVER | – | yes | yes |
| 860-791 | Windstream | MANCHESTER | – | yes | yes |
| 860-792 | Comcast | PUTNAM | – | yes | yes |
| 860-793 | AT&T | PLAINVILLE | – | – | yes |
| 860-794 | T-Mobile | HARTFORD | – | – | yes |
| 860-795 | Windstream | HARWINTON | – | yes | yes |
| 860-796 | T-Mobile | HARTFORD | – | – | yes |
| 860-797 | T-Mobile | NEWBRITAIN | – | yes | yes |
| 860-798 | Verizon | HARTFORD | – | – | yes |
| 860-799 | Lumen | NEWMILFORD | – | yes | yes |
| 860-800 | Peerless | NORWICH | 2012-11-20 | yes | yes |
| 860-801 | Windstream | NEWBRITAIN | – | yes | yes |
| 860-802 | American Messaging | HARTFORD | – | – | yes |
| 860-803 | Verizon | HARTFORD | – | – | yes |
| 860-804 | AT&T | WINDSORLKS | – | yes | yes |
| 860-805 | AT&T | HARTFORD | 2001-10-25 | – | yes |
| 860-806 | AT&T | HARWINTON | 2001-12-14 | yes | yes |
| 860-807 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-808 | Verizon | HARTFORD | – | yes | yes |
| 860-809 | Bandwidth | LEBANON | 2014-04-07 | yes | yes |
| 860-810 | AT&T | HARTFORD | – | yes | yes |
| 860-812 | Windstream | MANCHESTER | – | yes | yes |
| 860-813 | Verizon | E HAMPTON | – | yes | yes |
| 860-814 | Verizon | ENFIELD | – | yes | yes |
| 860-815 | Verizon | GLASTONBY | – | yes | yes |
| 860-816 | Verizon | HARTFORD | – | yes | yes |
| 860-817 | Verizon | HARTFORD | – | yes | yes |
| 860-818 | Verizon | HARTFORD | – | yes | yes |
| 860-819 | Verizon | HARTFORD | – | yes | yes |
| 860-820 | Spok | HARTFORD | – | – | yes |
| 860-821 | Windstream | PUTNAM | – | yes | yes |
| 860-822 | AT&T | NORWICH | – | yes | yes |
| 860-823 | AT&T | NORWICH | – | yes | yes |
| 860-824 | AT&T | CANAAN | – | yes | yes |
| 860-825 | Spok | HARTFORD | – | – | yes |
| 860-826 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-827 | AT&T | NEWBRITAIN | – | – | yes |
| 860-828 | AT&T | NEWBRITAIN | – | – | yes |
| 860-829 | AT&T | NEWBRITAIN | – | yes | yes |
| 860-830 | AT&T | HARTFORD | – | – | yes |
| 860-831 | Windstream | WINDSORLKS | – | yes | yes |
| 860-832 | AT&T | NEWBRITAIN | – | – | yes |
| 860-833 | T-Mobile | HARTFORD | – | yes | yes |
| 860-834 | T-Mobile | MIDDLETOWN | 2001-05-01 | yes | yes |
| 860-835 | Windstream | ENFIELD | – | yes | yes |
| 860-836 | Verizon | HARTFORD | – | – | yes |
| 860-837 | Windstream | HARTFORD | 2011-11-15 | yes | yes |
| 860-838 | Lumen | HARTFORD | – | yes | yes |
| 860-839 | AT&T | NEWBRITAIN | 2002-05-30 | yes | yes |
| 860-840 | T-Mobile | HARTFORD | 2008-10-03 | yes | yes |
| 860-841 | AT&T | HARTFORD | – | – | yes |
| 860-842 | American Messaging | HARTFORD | – | – | yes |
| 860-843 | AT&T | SIMSBURY | – | yes | yes |
| 860-844 | AT&T | SIMSBURY | – | yes | yes |
| 860-845 | Onvoy | BRISTOL | – | yes | yes |
| 860-846 | Onvoy | PLAINVILLE | – | yes | yes |
| 860-847 | AT&T | WINDSOR | – | yes | yes |
| 860-848 | AT&T | NORWICH | – | – | yes |
| 860-849 | T-Mobile | ENFIELD | 2001-05-01 | yes | yes |
| 860-850 | Bandwidth | NIANTIC | 2013-05-31 | yes | yes |
| 860-851 | Comcast | STAFFD SPG | – | yes | yes |
| 860-852 | Windstream | MIDDLETOWN | – | yes | yes |
| 860-853 | T-Mobile | OLD SAYBRK | – | yes | yes |
| 860-854 | Windstream | MIDDLETOWN | – | yes | yes |
| 860-855 | Onvoy | PLAINVILLE | – | yes | yes |
| 860-856 | Windstream | HARTFORD | 2011-03-04 | yes | yes |
| 860-857 | T-Mobile | NEW LONDON | – | yes | yes |
| 860-858 | Comcast | ROCKVILLE | – | yes | yes |
| 860-859 | AT&T | NORWICH | – | yes | yes |
| 860-860 | Onvoy | COVENTRY | 2026-10-12 | yes | no |
| 860-861 | AT&T | NORWICH | – | – | yes |
| 860-862 | AT&T | NORWICH | – | – | yes |
| 860-863 | Lumen | SOUTHINGTN | – | yes | yes |
| 860-864 | Onvoy | STORRS | – | yes | yes |
| 860-865 | Lumen | NEW LONDON | – | yes | yes |
| 860-866 | Lumen | TORRINGTON | – | yes | yes |
| 860-867 | T-Mobile | NEW LONDON | 2002-02-19 | yes | yes |
| 860-868 | AT&T | WASHINGTON | – | yes | yes |
| 860-869 | T-Mobile | HARTFORD | 2001-12-14 | – | yes |
| 860-870 | AT&T | ROCKVILLE | – | – | yes |
| 860-871 | AT&T | ROCKVILLE | – | – | yes |
| 860-872 | AT&T | ROCKVILLE | – | – | yes |
| 860-873 | AT&T | MOODUS | – | yes | yes |
| 860-874 | Verizon | HARTFORD | – | yes | yes |
| 860-875 | AT&T | ROCKVILLE | – | – | yes |
| 860-876 | AT&T | OLD SAYBRK | – | yes | yes |
| 860-877 | AT&T | SOUTHINGTN | – | yes | yes |
| 860-878 | AT&T | HARTFORD | – | yes | yes |
| 860-879 | Lumen | DEEP RIVER | – | yes | yes |
| 860-880 | Bandwidth | THOMASTON | 2010-02-15 | yes | yes |
| 860-881 | T-Mobile | HARTFORD | – | yes | yes |
| 860-882 | Windstream | HARTFORD | – | yes | yes |
| 860-883 | T-Mobile | HARTFORD | – | yes | yes |
| 860-884 | AT&T | NORWICH | – | – | yes |
| 860-885 | AT&T | NORWICH | – | yes | yes |
| 860-886 | AT&T | NORWICH | – | yes | yes |
| 860-887 | AT&T | NORWICH | – | – | yes |
| 860-888 | T-Mobile | HARTFORD | – | yes | yes |
| 860-889 | AT&T | NORWICH | – | – | yes |
| 860-890 | T-Mobile | HARTFORD | 2008-10-03 | yes | yes |
| 860-891 | Lumen | MOODUS | 2002-05-30 | yes | yes |
| 860-892 | AT&T | NORWICH | – | yes | yes |
| 860-893 | Windstream | NEWBRITAIN | – | yes | yes |
| 860-894 | AT&T | MIDDLETOWN | – | yes | yes |
| 860-895 | AT&T | HARTFORD | – | yes | yes |
| 860-896 | AT&T | ROCKVILLE | – | yes | yes |
| 860-897 | T-Mobile | HARTFORD | 2011-03-10 | yes | yes |
| 860-898 | Verizon | NEWMILFORD | 2005-07-21 | yes | yes |
| 860-899 | AT&T | HARTFORD | 2008-06-18 | yes | yes |
| 860-900 | Peerless | HARTFORD | 2015-11-04 | yes | yes |
| 860-901 | Verizon | WINDSORLKS | – | yes | yes |
| 860-902 | Verizon | WINDSOR | – | yes | yes |
| 860-903 | Verizon | WINDSORLKS | – | yes | yes |
| 860-904 | Verizon | HARTFORD | – | yes | yes |
| 860-905 | AT&T | WINDSOR | 2007-06-05 | yes | yes |
| 860-906 | Verizon | HARTFORD | – | yes | yes |
| 860-907 | Verizon | WINDSOR | – | yes | yes |
| 860-908 | AT&T | NORWICH | – | – | yes |
| 860-909 | Bandwidth | WINSTED | 2014-04-07 | yes | yes |
| 860-910 | Lumen | NEW LONDON | 2001-05-01 | yes | yes |
| 860-912 | Verizon | NEW LONDON | – | yes | yes |
| 860-913 | T-Mobile | HARTFORD | – | yes | yes |
| 860-914 | T-Mobile | NEWBRITAIN | 2016-10-12 | yes | yes |
| 860-915 | Windstream | NEWMILFORD | – | yes | yes |
| 860-916 | Verizon | HARTFORD | – | – | yes |
| 860-917 | Verizon | NORWICH | 2001-07-26 | yes | yes |
| 860-918 | Verizon | GLASTONBY | – | yes | yes |
| 860-919 | Verizon | SOUTHINGTN | – | – | yes |
| 860-920 | Verizon | HARTFORD | – | yes | yes |
| 860-921 | Windstream | TORRINGTON | – | yes | yes |
| 860-922 | T-Mobile | HARTFORD | – | yes | yes |
| 860-923 | AT&T | PUTNAM | – | yes | yes |
| 860-924 | YMAX COMMUNICATIONS CORP. - CT | HARTFORD | 2011-03-03 | yes | yes |
| 860-925 | Windstream | WINDSOR | – | yes | yes |
| 860-926 | Comcast | ROCKVILLE | – | yes | yes |
| 860-927 | AT&T | KENT | – | yes | yes |
| 860-928 | AT&T | PUTNAM | – | – | yes |
| 860-929 | Windstream | HARTFORD | – | yes | yes |
| 860-930 | Verizon | HARTFORD | – | – | yes |
| 860-931 | T-Mobile | WILLIMNTIC | 2014-10-01 | yes | yes |
| 860-932 | AT&T | DANIELSON | – | yes | yes |
| 860-933 | Verizon | WILLIMNTIC | 2002-04-23 | yes | yes |
| 860-934 | T-Mobile | NORWICH | 2014-12-09 | yes | yes |
| 860-935 | AT&T | NOTHOMPSON | – | yes | yes |
| 860-936 | Verizon | HARTFORD | 2015-12-04 | yes | yes |
| 860-937 | Comcast | HARTFORD | 2014-12-15 | yes | yes |
| 860-938 | T-Mobile | DEEP RIVER | 2001-03-26 | yes | yes |
| 860-939 | American Messaging | HARTFORD | – | – | yes |
| 860-940 | Windstream | BRISTOL | – | yes | yes |
| 860-941 | Verizon | NEW LONDON | – | yes | yes |
| 860-942 | Verizon | WILLIMNTIC | – | yes | yes |
| 860-943 | Windstream | OLD SAYBRK | – | yes | yes |
| 860-944 | AT&T | HARTFORD | – | – | yes |
| 860-945 | AT&T | WATERTOWN | – | – | yes |
| 860-946 | Windstream | NEWMILFORD | – | yes | yes |
| 860-947 | AT&T | HARTFORD | – | yes | yes |
| 860-948 | AT&T | HARTFORD | – | yes | yes |
| 860-949 | Verizon | NORWICH | 2006-07-20 | yes | yes |
| 860-951 | AT&T | HARTFORD | – | yes | yes |
| 860-952 | AT&T | HARTFORD | – | yes | yes |
| 860-953 | AT&T | HARTFORD | – | – | yes |
| 860-954 | AT&T | HARTFORD | – | – | yes |
| 860-955 | Peerless | HARTFORD | 2010-03-19 | yes | yes |
| 860-956 | AT&T | HARTFORD | – | yes | yes |
| 860-957 | AT&T | NEWMILFORD | – | yes | yes |
| 860-960 | T-Mobile | TORRINGTON | 2015-02-23 | yes | yes |
| 860-961 | T-Mobile | NEW LONDON | – | yes | yes |
| 860-962 | Onvoy | ENFIELD | – | yes | yes |
| 860-963 | AT&T | PUTNAM | – | yes | yes |
| 860-964 | T-Mobile | OLD SAYBRK | 2001-06-21 | yes | yes |
| 860-965 | AT&T | HARTFORD | 2001-07-02 | – | yes |
| 860-966 | Verizon | HARTFORD | 2002-04-23 | – | yes |
| 860-967 | Lumen | HARTFORD | 2002-04-23 | yes | yes |
| 860-968 | AT&T | GLASTONBY | – | yes | yes |
| 860-969 | Onvoy | HARTFORD | 2015-01-21 | yes | yes |
| 860-970 | Onvoy | HARTFORD | 2006-04-05 | yes | yes |
| 860-971 | Peerless | STAFFD SPG | 2006-03-17 | yes | yes |
| 860-972 | AT&T | HARTFORD | 2008-01-15 | yes | yes |
| 860-973 | Verizon | BRISTOL | – | yes | yes |
| 860-974 | AT&T | PUTNAM | – | yes | yes |
| 860-975 | Verizon | MIDDLETOWN | – | yes | yes |
| 860-977 | AT&T | HARTFORD | – | – | yes |
| 860-978 | AT&T | HARTFORD | – | – | yes |
| 860-979 | Windstream | ROCKVILLE | – | yes | yes |
| 860-980 | Bandwidth | MYSTIC | 2015-04-23 | yes | yes |
| 860-981 | Comcast | WATERTOWN | 2023-06-15 | yes | yes |
| 860-982 | T-Mobile | HARTFORD | 2001-03-26 | yes | yes |
| 860-983 | T-Mobile | HARTFORD | – | yes | yes |
| 860-984 | T-Mobile | NEW LONDON | – | yes | yes |
| 860-985 | T-Mobile | HARTFORD | – | yes | yes |
| 860-986 | AT&T | HARTFORD | – | yes | yes |
| 860-987 | AT&T | HARTFORD | – | yes | yes |
| 860-988 | Windstream | SIMSBURY | – | yes | yes |
| 860-989 | AT&T | HARTFORD | – | – | yes |
| 860-990 | Verizon | HARTFORD | 2010-07-09 | yes | yes |
| 860-991 | AT&T | NEWBRITAIN | – | – | yes |
| 860-992 | AT&T | HARTFORD | 2006-04-06 | yes | yes |
| 860-993 | T-Mobile | HARTFORD | 2011-03-10 | yes | yes |
| 860-994 | AT&T | HARTFORD | 2014-07-21 | yes | yes |
| 860-995 | T-Mobile | HARTFORD | 2001-08-24 | – | yes |
| 860-996 | Verizon | HARTFORD | 2015-09-04 | yes | yes |
| 860-997 | T-Mobile | HARTFORD | – | – | yes |
| 860-998 | AT&T | HARTFORD | – | – | yes |
| 860-999 | Peerless | HARTFORD | 2012-11-20 | yes | yes |
Frequently asked
How many prefixes does area code 860 have?
783 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,830 thousand-number ranges across 58 rate centers.
What do the first three digits after 860 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 860 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 860 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 526 of 860'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