Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 906 prefixes
360 of the 786 possible NXX blocks are assigned in area code 906 (45.8% of capacity), spread across 93 rate centers and 43 holders. The largest holders are MICHIGAN BELL TEL CO (67 blocks, 18.6%), PENINSULA FIBER NETWORK, LLC - MI (42 blocks, 11.7%), NEW CINGULAR WIRELESS PCS, LLC - IL (32 blocks, 8.9%). Grouped by brand, AT&T accounts for 106 blocks; brand-attributable holders cover 55% 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 2001-04-19 to 2026-09-11, with 41 blocks handed out in 2013 alone. 218 blocks (61%) 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 (873) is not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 26 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
360 assigned blocks of 786
93 rate centers
43 holders of record
61% in thousands-block pooling
Largest holders in 906
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| MICHIGAN BELL TEL CO | AT&T | 67 | 18.6% |
| PENINSULA FIBER NETWORK, LLC - MI | – | 42 | 11.7% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 32 | 8.9% |
| RANGE TELECOMMUNICATIONS | – | 30 | 8.3% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | Verizon | 28 | 7.8% |
| INTERACTIVE SERVICES NETWORK, INC. | – | 28 | 7.8% |
| ONVOY, LLCV - MI | Onvoy | 20 | 5.6% |
| UPPER PENINSULA TEL. CO. | – | 15 | 4.2% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | Lumen | 12 | 3.3% |
| HIAWATHA TEL. CO. | – | 11 | 3.1% |
| BRIGHTSPEED OF UPPER MICHIGAN, INC. | Brightspeed | 8 | 2.2% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 6 | 1.7% |
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.
MARQUETTE 39IRON MT 15SALTSTMARI 13ESCANABA 13HOUGHTON 13MENOMINEE 10IRONWOOD 7ISHPEMING 6IRON RIVER 6MANISTIQUE 6ST IGNACE 6CEDARVILLE 5CRYSTALFLS 5RUDYARD 5NEWBERRY 5POWERS 5CALUMET 5STEPHENSON 5MUNISING 4BERGLAND 4ENGADINE 4KINROSS 4BRIMLEY 4GWINN 4ROCK 4WATERSMEET 4GLADSTONE 4BARAGA 3AU TRAIN 3CURTIS 3WAKEFIELD 3MACKINACIS 3NEGAUNEE 3DEER PARK 3FELCH 3REXTON 3TROUT LAKE 3FENCERIVER 3BRUCECRSNG 3KEWEENAW 3DE TOUR 3REPUBLIC 3MICHIGAMME 3CARNEY 3PICKFORD 3WATTON 3CHATHAM 3ONTONAGON 3MARENISCO 3SMOKYLAKES 3SENEY 3NORWAY 3
All 360 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 |
|---|---|---|---|---|---|
| 906-200 | NUSO, LLC | IRON MT | 2023-01-31 | yes | yes |
| 906-201 | Verizon | L ANSE | 2003-09-15 | yes | yes |
| 906-202 | Verizon | MUNISING | 2003-09-15 | – | yes |
| 906-203 | Verizon | SALTSTMARI | 2004-03-10 | yes | yes |
| 906-204 | AT&T | ISHPEMING | 2004-03-19 | yes | yes |
| 906-205 | Lumen | MARQUETTE | 2017-12-29 | yes | yes |
| 906-206 | RANGE TELECOMMUNICATIONS | BARAGA | – | – | yes |
| 906-207 | PENINSULA FIBER NETWORK, LLC - MI | CEDARVILLE | 2013-10-01 | yes | yes |
| 906-208 | PENINSULA FIBER NETWORK, LLC - MI | AU TRAIN | 2013-10-01 | yes | yes |
| 906-209 | PENINSULA FIBER NETWORK, LLC - MI | GOLDENLAKE | 2013-10-01 | yes | yes |
| 906-210 | CSC WIRELESS, LLC | MARQUETTE | 2020-06-25 | yes | yes |
| 906-212 | UPPER PENINSULA TELEPHONE COMPANY - MI | ESCANABA | 2012-03-12 | yes | yes |
| 906-213 | INTERACTIVE SERVICES NETWORK, INC. | BERGLAND | – | – | yes |
| 906-214 | Lumen | IRON RIVER | 2005-02-25 | yes | yes |
| 906-215 | INTERACTIVE SERVICES NETWORK, INC. | CURTIS | – | – | yes |
| 906-216 | PENINSULA FIBER NETWORK, LLC - MI | LK GOGEBIC | 2013-10-02 | yes | yes |
| 906-217 | INTERACTIVE SERVICES NETWORK, INC. | ESCANABA | – | – | yes |
| 906-218 | INTERACTIVE SERVICES NETWORK, INC. | ENGADINE | – | – | yes |
| 906-219 | PENINSULA FIBER NETWORK, LLC - MI | FAITHORN | 2013-10-01 | yes | yes |
| 906-220 | PENINSULA FIBER NETWORK, LLC - MI | NOLANDOLKS | 2013-10-02 | yes | yes |
| 906-221 | Verizon | IRON MT | 2005-09-19 | yes | yes |
| 906-222 | RANGE TELECOMMUNICATIONS | MARQUETTE | – | – | yes |
| 906-223 | RANGE TELECOMMUNICATIONS | MARQUETTE | – | – | yes |
| 906-224 | AT&T | WAKEFIELD | – | yes | yes |
| 906-225 | AT&T | MARQUETTE | – | – | yes |
| 906-226 | AT&T | MARQUETTE | – | – | yes |
| 906-227 | AT&T | MARQUETTE | – | yes | yes |
| 906-228 | AT&T | MARQUETTE | – | – | yes |
| 906-229 | AT&T | WAKEFIELD | – | yes | yes |
| 906-230 | PENINSULA FIBER NETWORK, LLC - MI | DONKEN | 2013-10-01 | yes | yes |
| 906-231 | Verizon | HOUGHTON | 2004-04-30 | yes | yes |
| 906-232 | 123.NET, LLC | MARQUETTE | 2004-04-19 | yes | yes |
| 906-233 | AT&T | ESCANABA | – | yes | yes |
| 906-234 | INTERACTIVE SERVICES NETWORK, INC. | MACKINACIS | – | – | yes |
| 906-235 | Verizon | MARQUETTE | – | – | yes |
| 906-236 | Verizon | MARQUETTE | 2003-05-30 | yes | yes |
| 906-237 | INTERACTIVE SERVICES NETWORK, INC. | CRYSTALFLS | 2003-11-25 | – | yes |
| 906-238 | UPPER PENINSULA TEL. CO. | WATSON | – | – | yes |
| 906-239 | Verizon | IRON MT | 2004-05-27 | yes | yes |
| 906-240 | Charter | KINROSS | 2012-09-26 | yes | yes |
| 906-241 | Verizon | ESCANABA | 2004-05-27 | yes | yes |
| 906-242 | PENINSULA FIBER NETWORK, LLC - MI | NEGAUNEE | 2009-07-17 | yes | yes |
| 906-243 | PENINSULA FIBER NETWORK, LLC - MI | MASS | 2013-10-02 | yes | yes |
| 906-244 | INTERACTIVE SERVICES NETWORK, INC. | CEDARVILLE | 2004-12-06 | – | yes |
| 906-245 | PENINSULA FIBER NETWORK, LLC - MI | DEER PARK | 2013-10-01 | yes | yes |
| 906-246 | UPPER PENINSULA TEL. CO. | FELCH | – | – | yes |
| 906-247 | PENINSULA FIBER NETWORK, LLC - MI | REXTON | 2013-10-02 | yes | yes |
| 906-248 | HIAWATHA TEL. CO. | BRIMLEY | – | – | yes |
| 906-249 | AT&T | MARQUETTE | – | yes | yes |
| 906-250 | Verizon | MARQUETTE | – | – | yes |
| 906-251 | Bandwidth | MARQUETTE | – | yes | yes |
| 906-252 | INTERACTIVE SERVICES NETWORK, INC. | MANISTIQUE | 2004-12-06 | – | yes |
| 906-253 | AT&T | SALTSTMARI | – | yes | yes |
| 906-254 | PENINSULA FIBER NETWORK, LLC - MI | TRENARY | 2013-10-03 | yes | yes |
| 906-255 | UPPER PENINSULA TEL. CO. | MICHIGMFOR | – | – | yes |
| 906-256 | Lumen | GWINN | 2018-11-21 | yes | yes |
| 906-257 | Onvoy | CRYSTALFLS | 2018-12-11 | yes | yes |
| 906-258 | AT&T | MARQUETTE | 2015-06-23 | yes | yes |
| 906-259 | Charter | SALTSTMARI | 2007-08-27 | yes | yes |
| 906-260 | Comcast | RUDYARD | 2023-03-21 | yes | yes |
| 906-261 | Onvoy | ESCANABA | – | yes | yes |
| 906-262 | Onvoy | TROUT LAKE | – | yes | yes |
| 906-263 | Onvoy | SALTSTMARI | 2020-11-03 | yes | yes |
| 906-264 | AT&T | MARQUETTE | – | yes | yes |
| 906-265 | AT&T | IRON RIVER | – | yes | yes |
| 906-266 | Onvoy | BREVORT | – | yes | yes |
| 906-267 | Onvoy | CURTIS | 2021-06-25 | yes | yes |
| 906-268 | Onvoy | LAKELINDEN | 2021-06-25 | yes | yes |
| 906-270 | Onvoy | KINROSS | – | yes | yes |
| 906-271 | Verizon | IRON MT | – | – | yes |
| 906-272 | UPPER PENINSULA TEL. CO. | FENCERIVER | – | – | yes |
| 906-273 | Charter | MARQUETTE | 2007-02-27 | yes | yes |
| 906-274 | HIAWATHA TEL. CO. | ECKERMAN | – | – | yes |
| 906-275 | AT&T | HOUGHTON | 2013-01-30 | yes | yes |
| 906-276 | Onvoy | RAPIDRIVER | 2021-06-25 | yes | yes |
| 906-277 | Onvoy | CHANNING | – | yes | yes |
| 906-278 | RANGE TELECOMMUNICATIONS | BRIMLEY | – | – | yes |
| 906-279 | RANGE TELECOMMUNICATIONS | BRUCECRSNG | – | – | yes |
| 906-280 | Verizon | ESCANABA | 2003-07-28 | – | yes |
| 906-281 | Verizon | HOUGHTON | 2003-07-28 | yes | yes |
| 906-282 | Verizon | IRON MT | 2003-07-28 | – | yes |
| 906-283 | Brightspeed | GULLIVER | – | – | yes |
| 906-284 | Verizon | IRON RIVER | 2003-07-28 | yes | yes |
| 906-285 | Verizon | IRONWOOD | 2003-07-28 | yes | yes |
| 906-286 | Verizon | MANISTIQUE | 2003-07-28 | yes | yes |
| 906-287 | Verizon | ENGADINE | 2003-07-28 | yes | yes |
| 906-288 | UPPER PENINSULA TEL. CO. | DONKEN | – | – | yes |
| 906-289 | AT&T | KEWEENAW | – | yes | yes |
| 906-290 | Verizon | MENOMINEE | 2003-07-28 | yes | yes |
| 906-291 | Verizon | NEWBERRY | 2003-07-28 | yes | yes |
| 906-292 | AT&T | BREVORT | – | yes | yes |
| 906-293 | AT&T | NEWBERRY | – | yes | yes |
| 906-294 | BARAGA TELEPHONE COMPANY | NEWBERRY | 2001-06-11 | – | yes |
| 906-295 | Verizon | POWERS | 2003-07-28 | yes | yes |
| 906-296 | AT&T | LAKELINDEN | – | yes | yes |
| 906-297 | Brightspeed | DE TOUR | – | – | yes |
| 906-298 | Verizon | ST IGNACE | 2003-07-28 | yes | yes |
| 906-299 | AT&T | HOUGHTON | – | yes | yes |
| 906-300 | AT&T | REPUBLIC | 2023-08-29 | yes | yes |
| 906-301 | Onvoy | MICHIGAMME | 2021-01-07 | yes | yes |
| 906-302 | INTERACTIVE SERVICES NETWORK, INC. | IRON MT | – | – | yes |
| 906-303 | RANGE TELECOMMUNICATIONS | CALUMET | – | – | yes |
| 906-304 | RANGE TELECOMMUNICATIONS | CARNEY | – | – | yes |
| 906-305 | RANGE TELECOMMUNICATIONS | CEDARVILLE | – | – | yes |
| 906-306 | AT&T | PERKINS | 2023-08-29 | yes | yes |
| 906-307 | INTERACTIVE SERVICES NETWORK, INC. | IRONWOOD | – | – | yes |
| 906-308 | INTERACTIVE SERVICES NETWORK, INC. | IRON RIVER | – | – | yes |
| 906-309 | Onvoy | HERMANSVL | – | yes | yes |
| 906-310 | Onvoy | CEDARVILLE | – | yes | yes |
| 906-312 | INTERACTIVE SERVICES NETWORK, INC. | KEWEENAW | – | – | yes |
| 906-314 | Verizon | ESCANABA | – | – | yes |
| 906-315 | INTERACTIVE SERVICES NETWORK, INC. | MARQUETTE | – | – | yes |
| 906-316 | AT&T | ENGADINE | 2023-08-29 | yes | yes |
| 906-317 | INTERACTIVE SERVICES NETWORK, INC. | MENOMINEE | – | – | yes |
| 906-318 | T-Mobile | ESCANABA | 2024-02-16 | yes | yes |
| 906-319 | T-Mobile | HOUGHTON | 2024-02-21 | yes | yes |
| 906-320 | METRO SOUTHWEST PCS, LLP | MENOMINEE | 2025-05-13 | yes | yes |
| 906-321 | INTERACTIVE SERVICES NETWORK, INC. | NEWBERRY | – | – | yes |
| 906-322 | AT&T | KINROSS | 2005-03-25 | – | yes |
| 906-323 | AT&T | MICHIGAMME | – | yes | yes |
| 906-324 | INTERACTIVE SERVICES NETWORK, INC. | POWERS | – | – | yes |
| 906-325 | INTERACTIVE SERVICES NETWORK, INC. | ROCK | – | – | yes |
| 906-326 | INTERACTIVE SERVICES NETWORK, INC. | STEPHENSON | – | – | yes |
| 906-327 | INTERACTIVE SERVICES NETWORK, INC. | SALTSTMARI | – | – | yes |
| 906-328 | INTERACTIVE SERVICES NETWORK, INC. | ST IGNACE | – | – | yes |
| 906-329 | INTERACTIVE SERVICES NETWORK, INC. | WATERSMEET | – | – | yes |
| 906-330 | AT&T | POWERS | 2012-01-23 | yes | yes |
| 906-331 | Onvoy | KEWEENAW | – | yes | yes |
| 906-332 | Onvoy | MANISTIQUE | 2021-06-15 | yes | yes |
| 906-333 | SKYE TELECOM LLC DBA SKYETEL | MARQUETTE | 2021-09-17 | yes | yes |
| 906-334 | BARAGA TEL. CO. | TAPIOLA | – | – | yes |
| 906-335 | WAVENATION, LLC | MARQUETTE | 2026-01-08 | yes | yes |
| 906-336 | Verizon | IRONWOOD | 2026-01-26 | yes | yes |
| 906-337 | AT&T | CALUMET | – | yes | yes |
| 906-338 | BARAGA TEL. CO. | ALSTON | – | – | yes |
| 906-339 | AT&T | CHAMPION | – | yes | yes |
| 906-340 | Verizon | IRON MT | 2026-03-05 | yes | yes |
| 906-341 | Brightspeed | MANISTIQUE | – | – | yes |
| 906-342 | AT&T | IRON MT | 2026-03-09 | yes | yes |
| 906-343 | CHATHAM TEL. CO. | SAND RIVER | – | – | yes |
| 906-345 | AT&T | BIG BAY | – | yes | yes |
| 906-346 | AT&T | GWINN | – | yes | yes |
| 906-348 | AT&T | SALTSTMARI | 2026-04-22 | yes | yes |
| 906-349 | PENINSULA FIBER NETWORK, LLC - MI | PICKFORD | 2013-10-02 | yes | yes |
| 906-351 | NUSO, LLC | MARQUETTE | 2021-12-02 | yes | yes |
| 906-352 | Charter | MENOMINEE | 2010-11-30 | yes | yes |
| 906-353 | BARAGA TEL. CO. | BARAGA | – | – | yes |
| 906-355 | MIDWAY TEL. CO. | WATTON | – | – | yes |
| 906-356 | AT&T | ROCK | – | yes | yes |
| 906-357 | BARAGA TELEPHONE COMPANY | ROCK | 2001-07-30 | – | yes |
| 906-358 | AT&T | WATERSMEET | – | yes | yes |
| 906-359 | AT&T | PERKINS | – | yes | yes |
| 906-360 | AT&T | MARQUETTE | – | – | yes |
| 906-361 | AT&T | MARQUETTE | – | – | yes |
| 906-362 | AT&T | MARQUETTE | – | – | yes |
| 906-364 | AT&T | IRONWOOD | – | yes | yes |
| 906-365 | AT&T | BERGLAND | – | yes | yes |
| 906-366 | AT&T | WATERSMEET | – | yes | yes |
| 906-367 | AT&T | IRON RIVER | – | yes | yes |
| 906-368 | AT&T | POWERS | – | yes | yes |
| 906-369 | AT&T | CALUMET | – | yes | yes |
| 906-370 | AT&T | HOUGHTON | – | – | yes |
| 906-371 | AT&T | CHAMPION | – | yes | yes |
| 906-372 | AT&T | GWINN | – | yes | yes |
| 906-373 | AT&T | BIG BAY | – | yes | yes |
| 906-374 | AT&T | STEPHENSON | – | yes | yes |
| 906-375 | Onvoy | CRYSTALFLS | – | yes | yes |
| 906-376 | AT&T | REPUBLIC | – | yes | yes |
| 906-379 | Lumen | SALTSTMARI | – | yes | yes |
| 906-381 | RANGE TELECOMMUNICATIONS | CHATHAM | – | – | yes |
| 906-382 | PENINSULA FIBER NETWORK, LLC - MI | BRIMLEY | 2013-10-01 | yes | yes |
| 906-383 | PENINSULA FIBER NETWORK, LLC - MI | FENCERIVER | 2013-10-02 | yes | yes |
| 906-384 | AT&T | CORNELL | – | yes | yes |
| 906-387 | HIAWATHA TEL. CO. | MUNISING | – | – | yes |
| 906-388 | PENINSULA FIBER NETWORK, LLC - MI | HULBERT | 2013-10-02 | yes | yes |
| 906-390 | AT&T | ONTONAGON | – | yes | yes |
| 906-391 | AT&T | BRUCECRSNG | – | yes | yes |
| 906-392 | AT&T | MARENISCO | – | yes | yes |
| 906-393 | AT&T | WATTON | – | yes | yes |
| 906-395 | AT&T | BARAGA | – | yes | yes |
| 906-396 | AT&T | IRON MT | – | – | yes |
| 906-397 | AT&T | CARNEY | – | yes | yes |
| 906-398 | AT&T | ESCANABA | 2010-07-16 | yes | yes |
| 906-399 | Verizon | ESCANABA | 2004-08-23 | – | yes |
| 906-401 | Charter | NEGAUNEE | 2007-03-14 | yes | yes |
| 906-403 | PENINSULA FIBER NETWORK, LLC - MI | PARADISE | 2013-10-02 | yes | yes |
| 906-406 | RANGE TELECOMMUNICATIONS | DEER PARK | – | – | yes |
| 906-412 | PENINSULA FIBER NETWORK, LLC - MI | WHITE PINE | 2013-10-03 | yes | yes |
| 906-416 | PENINSULA FIBER NETWORK, LLC - MI | ROCKLAND | 2013-10-02 | yes | yes |
| 906-420 | AT&T | GLADSTONE | 2001-04-19 | yes | yes |
| 906-421 | PENINSULA FIBER NETWORK, LLC - MI | SKANDIA | 2013-10-03 | yes | yes |
| 906-422 | Lumen | MACKINACIS | 2018-02-16 | yes | yes |
| 906-424 | Charter | MENOMINEE | 2005-09-19 | yes | yes |
| 906-428 | AT&T | GLADSTONE | – | yes | yes |
| 906-430 | AT&T | ST IGNACE | – | yes | yes |
| 906-434 | INTERACTIVE SERVICES NETWORK, INC. | RUDYARD | 2004-12-06 | – | yes |
| 906-435 | Onvoy | CHATHAM | – | yes | yes |
| 906-436 | PENINSULA FIBER NETWORK, LLC - MI | ALSTON | 2013-10-01 | yes | yes |
| 906-437 | HIAWATHA TEL. CO. | BRIMLEY | – | – | yes |
| 906-438 | UPPER PENINSULA TEL. CO. | FAITHORN | – | – | yes |
| 906-439 | CHATHAM TEL. CO. | CHATHAM | – | yes | yes |
| 906-440 | AT&T | SALTSTMARI | – | yes | yes |
| 906-441 | PENINSULA FIBER NETWORK, LLC - MI | MUNISING | 2013-08-07 | yes | yes |
| 906-442 | Charter | RUDYARD | 2012-09-26 | yes | yes |
| 906-444 | Onvoy | ROCK | 2021-01-06 | yes | yes |
| 906-446 | CHATHAM TEL. CO. | TRENARY | – | – | yes |
| 906-448 | AT&T | IRON MT | 2012-01-25 | yes | yes |
| 906-449 | PENINSULA FIBER NETWORK, LLC - MI | MARQUETTE | 2008-10-28 | yes | yes |
| 906-450 | AT&T | MANISTIQUE | 2003-10-06 | yes | yes |
| 906-451 | IP HORIZON LLC | MARQUETTE | – | yes | yes |
| 906-452 | HIAWATHA TEL. CO. | SHINGLETON | – | – | yes |
| 906-458 | Verizon | MARQUETTE | – | – | yes |
| 906-459 | PENINSULA FIBER NETWORK, LLC - MI | DE TOUR | 2013-10-01 | yes | yes |
| 906-464 | Verizon | ISHPEMING | 2003-07-11 | yes | yes |
| 906-466 | AT&T | BARK RIVER | – | yes | yes |
| 906-467 | RANGE TELECOMMUNICATIONS | FELCH | – | – | yes |
| 906-468 | PENINSULA FIBER NETWORK, LLC - MI | SMOKYLAKES | 2013-10-03 | yes | yes |
| 906-469 | RANGE TELECOMMUNICATIONS | HOUGHTON | – | – | yes |
| 906-472 | MIDWAY TEL. CO. | GOLDENLAKE | – | – | yes |
| 906-474 | AT&T | RAPIDRIVER | – | yes | yes |
| 906-475 | AT&T | NEGAUNEE | – | yes | yes |
| 906-477 | AT&T | ENGADINE | – | yes | yes |
| 906-478 | Brightspeed | RUDYARD | – | – | yes |
| 906-481 | BARAGA TELEPHONE COMPANY | HOUGHTON | – | – | yes |
| 906-482 | AT&T | HOUGHTON | – | – | yes |
| 906-483 | AT&T | HOUGHTON | – | yes | yes |
| 906-484 | Brightspeed | CEDARVILLE | – | – | yes |
| 906-485 | AT&T | ISHPEMING | – | yes | yes |
| 906-486 | AT&T | ISHPEMING | – | yes | yes |
| 906-487 | AT&T | HOUGHTON | – | – | yes |
| 906-492 | HIAWATHA TEL. CO. | PARADISE | – | – | yes |
| 906-493 | UPPER PENINSULA TEL. CO. | DRUMMONDIS | – | – | yes |
| 906-494 | HIAWATHA TEL. CO. | GRANDMRAIS | – | – | yes |
| 906-495 | Brightspeed | KINROSS | – | – | yes |
| 906-497 | AT&T | POWERS | – | yes | yes |
| 906-498 | AT&T | HERMANSVL | – | yes | yes |
| 906-499 | HIAWATHA TEL. CO. | SENEY | – | – | yes |
| 906-514 | RANGE TELECOMMUNICATIONS | ISHPEMING | – | – | yes |
| 906-522 | PENINSULA FIBER NETWORK, LLC - MI | EWEN | 2013-10-01 | yes | yes |
| 906-523 | AT&T | HOUGHTON | – | yes | yes |
| 906-524 | BARAGA TEL. CO. | L ANSE | – | – | yes |
| 906-532 | PENINSULA FIBER NETWORK, LLC - MI | GRANDMRAIS | 2013-10-02 | yes | yes |
| 906-535 | PENINSULA FIBER NETWORK, LLC - MI | HIAWATHFOR | 2013-10-02 | yes | yes |
| 906-542 | AT&T | CHANNING | – | yes | yes |
| 906-544 | UPPER PENINSULA TEL. CO. | NOLANDOLKS | – | – | yes |
| 906-546 | PENINSULA FIBER NETWORK, LLC - MI | SHINGLETON | 2013-10-03 | yes | yes |
| 906-548 | UPPER PENINSULA TEL. CO. | SMOKYLAKES | – | – | yes |
| 906-553 | AT&T | ESCANABA | 2003-08-25 | yes | yes |
| 906-559 | PENINSULA FIBER NETWORK, LLC - MI | TROUTCREEK | 2013-10-03 | yes | yes |
| 906-563 | AT&T | NORWAY | – | yes | yes |
| 906-569 | AT&T | TROUT LAKE | – | yes | yes |
| 906-573 | HIAWATHA TEL. CO. | HIAWATHFOR | – | – | yes |
| 906-575 | AT&T | BERGLAND | – | yes | yes |
| 906-586 | AT&T | CURTIS | – | yes | yes |
| 906-595 | UPPER PENINSULA TEL. CO. | REXTON | – | – | yes |
| 906-597 | RANGE TELECOMMUNICATIONS | MANISTIQUE | – | – | yes |
| 906-598 | RANGE TELECOMMUNICATIONS | MARENISCO | – | – | yes |
| 906-606 | PENINSULA FIBER NETWORK, LLC - MI | SCOTTPOINT | 2013-10-03 | yes | yes |
| 906-619 | PENINSULA FIBER NETWORK, LLC - MI | ECKERMAN | 2013-10-01 | yes | yes |
| 906-622 | RANGE TELECOMMUNICATIONS | MENOMINEE | – | – | yes |
| 906-623 | PENINSULA FIBER NETWORK, LLC - MI | SAND RIVER | 2013-10-03 | yes | yes |
| 906-624 | RANGE TELECOMMUNICATIONS | MUNISING | – | – | yes |
| 906-628 | PENINSULA FIBER NETWORK, LLC - MI | GARDEN | 2013-10-02 | yes | yes |
| 906-629 | Lumen | MARQUETTE | – | yes | yes |
| 906-630 | Verizon | SALTSTMARI | – | – | yes |
| 906-631 | Peerless | MARQUETTE | – | yes | yes |
| 906-632 | AT&T | SALTSTMARI | – | – | yes |
| 906-635 | AT&T | SALTSTMARI | – | – | yes |
| 906-639 | UPPER PENINSULA TEL. CO. | CARNEY | – | – | yes |
| 906-643 | AT&T | ST IGNACE | – | yes | yes |
| 906-644 | Brightspeed | GARDEN | – | – | yes |
| 906-647 | Brightspeed | PICKFORD | – | – | yes |
| 906-654 | UPPER PENINSULA TEL. CO. | SCOTTPOINT | – | – | yes |
| 906-656 | PENINSULA FIBER NETWORK, LLC - MI | DRUMMONDIS | 2013-10-01 | yes | yes |
| 906-658 | HIAWATHA TEL. CO. | DEER PARK | – | – | yes |
| 906-661 | AT&T | AMASA | 2001-05-14 | yes | yes |
| 906-662 | Lumen | MARQUETTE | 2002-02-28 | yes | yes |
| 906-663 | AT&T | BESSEMER | – | yes | yes |
| 906-666 | CLEAR RATE COMMUNICATIONS, LLC | MARQUETTE | 2012-09-14 | yes | yes |
| 906-667 | AT&T | BESSEMER | – | yes | yes |
| 906-668 | PENINSULA FIBER NETWORK, LLC - MI | FELCH | 2013-10-01 | yes | yes |
| 906-670 | Lumen | WATERSMEET | 2001-05-21 | yes | yes |
| 906-673 | RANGE TELECOMMUNICATIONS | ONTONAGON | – | – | yes |
| 906-675 | PENINSULA FIBER NETWORK, LLC - MI | IRONWOOD | 2013-10-02 | yes | yes |
| 906-676 | INTERACTIVE SERVICES NETWORK, INC. | MICHIGAMME | 2001-08-02 | – | yes |
| 906-680 | Lumen | WAKEFIELD | 2001-05-14 | yes | yes |
| 906-696 | INTERACTIVE SERVICES NETWORK, INC. | HOUGHTON | – | – | yes |
| 906-702 | AT&T | ISHPEMING | 2001-05-14 | yes | yes |
| 906-706 | PENINSULA FIBER NETWORK, LLC - MI | TAPIOLA | 2013-10-03 | yes | yes |
| 906-710 | INTERACTIVE SERVICES NETWORK, INC. | DE TOUR | 2004-12-06 | – | yes |
| 906-713 | RANGE TELECOMMUNICATIONS | REXTON | – | – | yes |
| 906-714 | RANGE TELECOMMUNICATIONS | RUDYARD | – | – | yes |
| 906-717 | INTERACTIVE SERVICES NETWORK, INC. | PICKFORD | 2004-12-06 | – | yes |
| 906-723 | Lumen | BARK RIVER | 2001-05-14 | yes | yes |
| 906-729 | Vonage | CALUMET | 2018-06-07 | yes | yes |
| 906-731 | RANGE TELECOMMUNICATIONS | SALTSTMARI | – | – | yes |
| 906-733 | RANGE TELECOMMUNICATIONS | SENEY | – | – | yes |
| 906-738 | PENINSULA FIBER NETWORK, LLC - MI | WALLACE | 2013-10-03 | yes | yes |
| 906-743 | INTERACTIVE SERVICES NETWORK, INC. | TROUT LAKE | 2001-09-13 | – | yes |
| 906-747 | PENINSULA FIBER NETWORK, LLC - MI | WATSON | 2013-10-03 | yes | yes |
| 906-748 | Verizon | SALTSTMARI | 2001-07-11 | yes | yes |
| 906-753 | AT&T | STEPHENSON | – | yes | yes |
| 906-760 | INTERACTIVE SERVICES NETWORK, INC. | REPUBLIC | 2001-09-13 | – | yes |
| 906-762 | Lumen | NEWBERRY | 2001-05-14 | yes | yes |
| 906-767 | T-Mobile | IRONWOOD | 2018-02-08 | yes | yes |
| 906-771 | BORDERLAND COMMUNICATIONS, LLC - MI | IRON MT | – | yes | yes |
| 906-774 | AT&T | IRON MT | – | – | yes |
| 906-776 | AT&T | IRON MT | – | yes | yes |
| 906-777 | RANGE TELECOMMUNICATIONS | MARQUETTE | – | – | yes |
| 906-779 | AT&T | IRON MT | – | yes | yes |
| 906-783 | PENINSULA FIBER NETWORK, LLC - MI | SENEY | 2013-10-02 | yes | yes |
| 906-786 | AT&T | ESCANABA | – | – | yes |
| 906-787 | UPPER PENINSULA TEL. CO. | MARENISCO | – | – | yes |
| 906-788 | UPPER PENINSULA TEL. CO. | WALLACE | – | – | yes |
| 906-789 | AT&T | ESCANABA | – | – | yes |
| 906-792 | AT&T | MENOMINEE | – | yes | yes |
| 906-813 | Lumen | BERGLAND | 2001-05-14 | yes | yes |
| 906-822 | AT&T | AMASA | – | yes | yes |
| 906-825 | AT&T | GLADSTONE | 2001-05-14 | yes | yes |
| 906-826 | AT&T | STEPHENSON | 2001-05-14 | yes | yes |
| 906-827 | ONTONAGON COUNTY TEL. CO. | BRUCECRSNG | – | – | yes |
| 906-828 | 123.NET, LLC | IRON MT | 2004-10-11 | yes | yes |
| 906-829 | HD CARRIER LLC | MARQUETTE | – | yes | yes |
| 906-831 | RANGE TELECOMMUNICATIONS | SMOKYLAKES | – | – | yes |
| 906-832 | RANGE TELECOMMUNICATIONS | ST IGNACE | – | – | yes |
| 906-833 | RANGE TELECOMMUNICATIONS | STEPHENSON | – | – | yes |
| 906-842 | UPPER PENINSULA TEL. CO. | LK GOGEBIC | – | – | yes |
| 906-847 | AT&T | MACKINACIS | – | yes | yes |
| 906-852 | MIDWAY TEL. CO. | TROUTCREEK | – | – | yes |
| 906-863 | AT&T | MENOMINEE | – | – | yes |
| 906-864 | AT&T | MENOMINEE | – | yes | yes |
| 906-869 | Verizon | MARQUETTE | 2001-07-11 | – | yes |
| 906-873 | OPENTACT INC. | MARQUETTE | 2026-09-11 | yes | no |
| 906-874 | BARAGA TELEPHONE COMPANY | CRYSTALFLS | 2002-01-25 | – | yes |
| 906-875 | AT&T | CRYSTALFLS | – | yes | yes |
| 906-876 | HIAWATHA TEL. CO. | HULBERT | – | – | yes |
| 906-883 | ONTONAGON COUNTY TEL. CO. | MASS | – | – | yes |
| 906-884 | ONTONAGON COUNTY TEL. CO. | ONTONAGON | – | – | yes |
| 906-885 | ONTONAGON COUNTY TEL. CO. | WHITE PINE | – | – | yes |
| 906-886 | ONTONAGON COUNTY TEL. CO. | ROCKLAND | – | – | yes |
| 906-888 | AHOI LLC | NORWAY | 2026-01-22 | yes | yes |
| 906-892 | CHATHAM TEL. CO. | AU TRAIN | – | – | yes |
| 906-895 | Twilio | MARQUETTE | 2022-02-16 | yes | yes |
| 906-901 | Charter | MARQUETTE | 2021-04-14 | yes | yes |
| 906-912 | Charter | AU TRAIN | 2024-10-17 | yes | yes |
| 906-913 | Charter | GWINN | 2024-10-17 | yes | yes |
| 906-914 | Lumen | MENOMINEE | 2014-07-24 | yes | yes |
| 906-919 | RANGE TELECOMMUNICATIONS | WATTON | – | – | yes |
| 906-932 | AT&T | IRONWOOD | – | – | yes |
| 906-934 | AT&T | CALUMET | 2001-05-14 | yes | yes |
| 906-936 | Onvoy | MARQUETTE | 2018-11-27 | yes | yes |
| 906-942 | CHATHAM TEL. CO. | SKANDIA | – | – | yes |
| 906-970 | AT&T | NORWAY | 2001-05-14 | yes | yes |
| 906-971 | RANGE TELECOMMUNICATIONS | GLADSTONE | – | – | yes |
| 906-972 | RANGE TELECOMMUNICATIONS | FENCERIVER | – | – | yes |
| 906-973 | RANGE TELECOMMUNICATIONS | MARQUETTE | – | – | yes |
| 906-978 | PENINSULA FIBER NETWORK, LLC - MI | GULLIVER | 2013-10-02 | yes | yes |
| 906-984 | Lumen | ST IGNACE | 2001-05-21 | yes | yes |
| 906-988 | ONTONAGON COUNTY TEL. CO. | EWEN | – | – | yes |
| 906-999 | Onvoy | IRON RIVER | 2021-01-06 | yes | yes |
Frequently asked
How many prefixes does area code 906 have?
360 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 3,600 thousand-number ranges across 93 rate centers.
What do the first three digits after 906 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 906 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 906 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 218 of 906'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