Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 313 prefixes
769 of the 786 possible NXX blocks are assigned in area code 313 (97.8% of capacity), spread across 6 rate centers and 35 holders. The largest holders are MICHIGAN BELL TEL CO (244 blocks, 31.7%), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (141 blocks, 18.3%), NEW CINGULAR WIRELESS PCS, LLC - IL (95 blocks, 12.4%). Grouped by brand, AT&T accounts for 361 blocks; brand-attributable holders cover 96% 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 2001-03-09 to 2026-05-27, with 19 blocks handed out in 2013 alone. 485 blocks (63%) 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. 3 assigned blocks (901, 902, 941) are not yet in service: assigned to a carrier but not open for calls, so a caller ID from one is spoofed. 151 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
769 assigned blocks of 786
6 rate centers
35 holders of record
63% in thousands-block pooling
Largest holders in 313
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| MICHIGAN BELL TEL CO | AT&T | 244 | 31.7% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | T-Mobile | 141 | 18.3% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 95 | 12.4% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | Verizon | 54 | 7% |
| BANDWIDTH.COM CLEC, LLC - MI | Bandwidth | 28 | 3.6% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Verizon | 25 | 3.3% |
| ONVOY, LLCV - MI | Onvoy | 25 | 3.3% |
| AMERICAN MESSAGING SERVICES, LLC | American Messaging | 24 | 3.1% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | Lumen | 22 | 2.9% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | AT&T | 18 | 2.3% |
| METROPCS, INC. | T-Mobile | 15 | 2% |
| PAETEC ITEL, LLC | Windstream | 15 | 2% |
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.
All 769 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 |
|---|---|---|---|---|---|
| 313-200 | T-Mobile | DETROITZN1 | 2022-01-10 | yes | yes |
| 313-201 | American Messaging | DETROITZN4 | – | – | yes |
| 313-202 | AT&T | DETROITZN1 | – | yes | yes |
| 313-203 | AT&T | DETROITZN6 | – | yes | yes |
| 313-204 | AT&T | DETROITZN5 | – | – | yes |
| 313-205 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-206 | AT&T | DETROITZN6 | – | – | yes |
| 313-207 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-208 | T-Mobile | DETROITZN1 | – | yes | yes |
| 313-209 | Peerless | DETROITZN1 | 2013-03-11 | yes | yes |
| 313-210 | FIVE9, INC. | DETROITZN1 | 2023-05-26 | yes | yes |
| 313-212 | AT&T | DETROITZN5 | – | – | yes |
| 313-213 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-214 | T-Mobile | DETROITZN5 | 2013-05-29 | yes | yes |
| 313-215 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-216 | Verizon | DETROITZN6 | – | yes | yes |
| 313-217 | Bandwidth | DETROITZN2 | 2018-07-11 | yes | yes |
| 313-218 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-219 | Spok | DETROITZN5 | – | – | yes |
| 313-220 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-221 | AT&T | DETROITZN1 | 2005-06-17 | yes | yes |
| 313-222 | AT&T | DETROITZN1 | – | – | yes |
| 313-223 | AT&T | DETROITZN1 | – | – | yes |
| 313-224 | AT&T | DETROITZN1 | – | – | yes |
| 313-225 | AT&T | DETROITZN1 | – | – | yes |
| 313-226 | AT&T | DETROITZN1 | – | – | yes |
| 313-227 | AT&T | DETROITZN1 | – | – | yes |
| 313-228 | Lumen | DETROITZN6 | – | yes | yes |
| 313-229 | T-Mobile | DETROITZN5 | 2012-07-12 | yes | yes |
| 313-230 | Verizon | DETROITZN1 | – | yes | yes |
| 313-231 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-232 | AT&T | DETROITZN5 | – | – | yes |
| 313-233 | AT&T | DETROITZN5 | – | – | yes |
| 313-234 | AT&T | DETROITZN1 | – | yes | yes |
| 313-235 | AT&T | DETROITZN1 | – | – | yes |
| 313-236 | Verizon | DETROITZN5 | 2012-09-28 | yes | yes |
| 313-237 | AT&T | DETROITZN1 | – | – | yes |
| 313-238 | Spok | DETROITZN5 | – | – | yes |
| 313-239 | Spok | DETROITZN5 | – | – | yes |
| 313-240 | AT&T | DETROITZN6 | – | yes | yes |
| 313-241 | Onvoy | DETROITZN4 | 2012-02-08 | yes | yes |
| 313-242 | Windstream | DETROITZN5 | – | yes | yes |
| 313-243 | Windstream | DETROITZN4 | – | yes | yes |
| 313-244 | AT&T | DETROITZN5 | – | yes | yes |
| 313-245 | AT&T | DETROITZN2 | – | – | yes |
| 313-246 | Bandwidth | DETROITZN5 | 2013-10-24 | yes | yes |
| 313-247 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-248 | AT&T | DETROITZN6 | – | – | yes |
| 313-249 | AT&T | DETROITZN5 | – | – | yes |
| 313-250 | Spok | DETROITZN5 | – | – | yes |
| 313-251 | Onvoy | DETROITZN6 | 2015-12-24 | yes | yes |
| 313-252 | AT&T | DETROITZN3 | – | – | yes |
| 313-253 | AT&T | DETROITZN6 | – | yes | yes |
| 313-254 | Lumen | DETROITZN6 | – | yes | yes |
| 313-255 | AT&T | DETROITZN5 | – | – | yes |
| 313-256 | AT&T | DETROITZN1 | – | yes | yes |
| 313-257 | T-Mobile | DETROITZN3 | 2018-09-20 | yes | yes |
| 313-258 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-259 | AT&T | DETROITZN1 | – | – | yes |
| 313-260 | American Messaging | DETROITZN5 | – | – | yes |
| 313-261 | Bandwidth | DETROITZN1 | – | yes | yes |
| 313-262 | Verizon | DETROITZN1 | – | yes | yes |
| 313-263 | Lumen | DETROITZN1 | – | yes | yes |
| 313-264 | T-Mobile | DETROITZN2 | 2013-05-28 | yes | yes |
| 313-265 | T-Mobile | DETROITZN1 | 2013-06-12 | yes | yes |
| 313-266 | T-Mobile | DETROITZN6 | 2014-08-08 | yes | yes |
| 313-267 | AT&T | DETROITZN2 | – | – | yes |
| 313-268 | Verizon | DETROITZN5 | – | – | yes |
| 313-269 | Verizon | DETROITZN5 | – | – | yes |
| 313-270 | AT&T | DETROITZN4 | – | yes | yes |
| 313-271 | AT&T | DETROITZN6 | – | – | yes |
| 313-272 | AT&T | DETROITZN4 | – | – | yes |
| 313-273 | AT&T | DETROITZN4 | – | – | yes |
| 313-274 | AT&T | DETROITZN6 | – | – | yes |
| 313-275 | AT&T | DETROITZN5 | – | – | yes |
| 313-276 | Spok | DETROITZN5 | – | – | yes |
| 313-277 | AT&T | DETROITZN6 | – | yes | yes |
| 313-278 | AT&T | DETROITZN6 | – | – | yes |
| 313-279 | Lumen | DETROITZN4 | – | yes | yes |
| 313-280 | Spok | DETROITZN1 | – | – | yes |
| 313-281 | Lumen | DETROITZN3 | – | yes | yes |
| 313-282 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-283 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-284 | Bandwidth | DETROITZN2 | 2016-04-14 | yes | yes |
| 313-285 | Onvoy | DETROITZN1 | – | yes | yes |
| 313-286 | Verizon | DETROITZN5 | – | yes | yes |
| 313-287 | T-Mobile | DETROITZN5 | 2011-08-31 | yes | yes |
| 313-288 | Windstream | DETROITZN4 | 2009-04-14 | yes | yes |
| 313-289 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-290 | T-Mobile | DETROITZN2 | 2015-05-21 | yes | yes |
| 313-291 | AT&T | DETROITZN6 | – | – | yes |
| 313-292 | AT&T | DETROITZN6 | – | – | yes |
| 313-293 | T-Mobile | DETROITZN1 | – | yes | yes |
| 313-294 | AT&T | DETROITZN6 | – | yes | yes |
| 313-295 | AT&T | DETROITZN6 | – | – | yes |
| 313-296 | Verizon | DETROITZN5 | 2012-12-26 | yes | yes |
| 313-297 | AT&T | DETROITZN6 | – | – | yes |
| 313-298 | AT&T | DETROITZN1 | – | – | yes |
| 313-299 | AT&T | DETROITZN6 | – | yes | yes |
| 313-300 | Verizon | DETROITZN5 | – | – | yes |
| 313-301 | Verizon | DETROITZN5 | 2025-01-03 | yes | yes |
| 313-302 | AT&T | DETROITZN5 | – | – | yes |
| 313-303 | AT&T | DETROITZN5 | – | – | yes |
| 313-304 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-305 | Windstream | DETROITZN3 | – | yes | yes |
| 313-306 | Bandwidth | DETROITZN4 | 2018-09-24 | yes | yes |
| 313-307 | Onvoy | DETROITZN4 | 2013-09-19 | yes | yes |
| 313-308 | Windstream | DETROITZN2 | – | yes | yes |
| 313-309 | Windstream | DETROITZN1 | – | yes | yes |
| 313-310 | AT&T | DETROITZN5 | – | – | yes |
| 313-312 | Windstream | DETROITZN3 | 2009-10-16 | yes | yes |
| 313-313 | AHOI LLC | DETROITZN6 | 2026-01-13 | yes | yes |
| 313-314 | Bandwidth | DETROITZN3 | 2016-04-15 | yes | yes |
| 313-315 | T-Mobile | DETROITZN5 | 2013-06-26 | yes | yes |
| 313-316 | Verizon | DETROITZN5 | – | – | yes |
| 313-317 | AT&T | DETROITZN6 | – | – | yes |
| 313-318 | AT&T | DETROITZN5 | – | – | yes |
| 313-319 | Verizon | DETROITZN5 | – | – | yes |
| 313-320 | AT&T | DETROITZN5 | – | – | yes |
| 313-321 | Spok | DETROITZN5 | – | – | yes |
| 313-322 | AT&T | DETROITZN6 | – | – | yes |
| 313-323 | AT&T | DETROITZN6 | – | – | yes |
| 313-324 | AT&T | DETROITZN1 | – | yes | yes |
| 313-325 | American Messaging | DETROITZN4 | – | – | yes |
| 313-326 | T-Mobile | DETROITZN5 | 2013-05-29 | yes | yes |
| 313-327 | T-Mobile | DETROITZN3 | 2013-05-28 | yes | yes |
| 313-328 | Spok | DETROITZN5 | – | – | yes |
| 313-329 | T-Mobile | DETROITZN1 | – | yes | yes |
| 313-330 | AT&T | DETROITZN5 | – | – | yes |
| 313-331 | AT&T | DETROITZN2 | – | yes | yes |
| 313-332 | Lumen | DETROITZN2 | – | yes | yes |
| 313-333 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-334 | Lumen | DETROITZN3 | – | yes | yes |
| 313-335 | AT&T | DETROITZN1 | – | yes | yes |
| 313-336 | AT&T | DETROITZN6 | – | – | yes |
| 313-337 | AT&T | DETROITZN6 | – | – | yes |
| 313-338 | AT&T | DETROITZN1 | 2011-10-11 | yes | yes |
| 313-339 | AT&T | DETROITZN5 | 2025-01-13 | yes | yes |
| 313-340 | AT&T | DETROITZN4 | – | yes | yes |
| 313-341 | AT&T | DETROITZN4 | – | – | yes |
| 313-342 | AT&T | DETROITZN4 | – | – | yes |
| 313-343 | AT&T | DETROITZN2 | – | yes | yes |
| 313-344 | Lumen | DETROITZN2 | – | yes | yes |
| 313-345 | AT&T | DETROITZN4 | – | – | yes |
| 313-346 | Lumen | DETROITZN3 | – | yes | yes |
| 313-347 | Verizon | DETROITZN2 | – | yes | yes |
| 313-348 | Verizon | DETROITZN5 | – | – | yes |
| 313-349 | T-Mobile | DETROITZN3 | 2013-12-03 | yes | yes |
| 313-350 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-351 | AT&T | DETROITZN3 | 2018-09-26 | yes | yes |
| 313-352 | T-Mobile | DETROITZN5 | 2012-07-12 | yes | yes |
| 313-353 | T-Mobile | DETROITZN5 | 2012-08-29 | yes | yes |
| 313-354 | AT&T | DETROITZN5 | – | yes | yes |
| 313-355 | Bandwidth | DETROITZN1 | 2008-10-09 | yes | yes |
| 313-356 | T-Mobile | DETROITZN3 | 2016-06-14 | yes | yes |
| 313-357 | Windstream | DETROITZN6 | – | – | yes |
| 313-358 | T-Mobile | DETROITZN6 | 2009-10-20 | yes | yes |
| 313-359 | AT&T | DETROITZN6 | – | yes | yes |
| 313-360 | AT&T | DETROITZN1 | 2021-11-05 | yes | yes |
| 313-361 | AT&T | DETROITZN1 | – | – | yes |
| 313-362 | Windstream | DETROITZN5 | – | yes | yes |
| 313-363 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-364 | Bandwidth | DETROITZN4 | 2018-03-30 | yes | yes |
| 313-365 | AT&T | DETROITZN3 | – | yes | yes |
| 313-366 | AT&T | DETROITZN3 | – | – | yes |
| 313-367 | T-Mobile | DETROITZN4 | 2013-05-28 | yes | yes |
| 313-368 | AT&T | DETROITZN3 | – | – | yes |
| 313-369 | AT&T | DETROITZN3 | – | – | yes |
| 313-370 | T-Mobile | DETROITZN4 | 2023-03-03 | yes | yes |
| 313-371 | AT&T | DETROITZN2 | – | – | yes |
| 313-372 | AT&T | DETROITZN2 | – | – | yes |
| 313-373 | AT&T | DETROITZN1 | 2009-10-06 | yes | yes |
| 313-374 | T-Mobile | DETROITZN6 | 2013-05-28 | yes | yes |
| 313-375 | AT&T | DETROITZN6 | – | yes | yes |
| 313-376 | Spok | DETROITZN5 | – | – | yes |
| 313-377 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-378 | Verizon | DETROITZN5 | – | – | yes |
| 313-379 | CLEAR RATE COMMUNICATIONS, LLC | DETROITZN1 | 2017-02-22 | yes | yes |
| 313-380 | Bandwidth | DETROITZN6 | 2021-01-11 | yes | yes |
| 313-381 | AT&T | DETROITZN6 | – | – | yes |
| 313-382 | AT&T | DETROITZN6 | – | – | yes |
| 313-383 | AT&T | DETROITZN6 | – | – | yes |
| 313-384 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-385 | NUSO, LLC | DETROITZN1 | 2020-04-22 | yes | yes |
| 313-386 | AT&T | DETROITZN6 | – | – | yes |
| 313-387 | AT&T | DETROITZN5 | – | – | yes |
| 313-388 | AT&T | DETROITZN6 | – | – | yes |
| 313-389 | AT&T | DETROITZN6 | – | yes | yes |
| 313-390 | AT&T | DETROITZN6 | – | – | yes |
| 313-391 | Verizon | DETROITZN5 | 2022-07-15 | yes | yes |
| 313-392 | AT&T | DETROITZN1 | – | yes | yes |
| 313-393 | AT&T | DETROITZN1 | – | – | yes |
| 313-394 | AT&T | DETROITZN1 | – | yes | yes |
| 313-395 | T-Mobile | DETROITZN6 | 2014-10-23 | yes | yes |
| 313-396 | AT&T | DETROITZN1 | – | – | yes |
| 313-397 | Comcast | DETROITZN4 | 2006-02-01 | yes | yes |
| 313-398 | T-Mobile | DETROITZN1 | 2015-07-23 | yes | yes |
| 313-399 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-400 | Verizon | DETROITZN5 | – | – | yes |
| 313-401 | AT&T | DETROITZN5 | – | yes | yes |
| 313-402 | Verizon | DETROITZN5 | – | – | yes |
| 313-403 | T-Mobile | DETROITZN6 | 2014-10-23 | yes | yes |
| 313-404 | AT&T | DETROITZN5 | – | yes | yes |
| 313-405 | AT&T | DETROITZN5 | – | yes | yes |
| 313-406 | Comcast | DETROITZN6 | – | yes | yes |
| 313-407 | Verizon | DETROITZN5 | – | – | yes |
| 313-408 | AT&T | DETROITZN5 | – | – | yes |
| 313-409 | AT&T | DETROITZN5 | – | yes | yes |
| 313-410 | Verizon | DETROITZN5 | – | – | yes |
| 313-412 | AT&T | DETROITZN5 | – | yes | yes |
| 313-413 | T-Mobile | DETROITZN4 | 2015-05-11 | yes | yes |
| 313-414 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-415 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-416 | Verizon | DETROITZN4 | – | yes | yes |
| 313-417 | AT&T | DETROITZN2 | – | yes | yes |
| 313-418 | Verizon | DETROITZN5 | – | – | yes |
| 313-419 | T-Mobile | DETROITZN3 | 2022-08-10 | yes | yes |
| 313-420 | Windstream | DETROITZN1 | – | yes | yes |
| 313-421 | AT&T | DETROITZN5 | – | yes | yes |
| 313-422 | Verizon | DETROITZN3 | – | yes | yes |
| 313-423 | T-Mobile | DETROITZN2 | 2005-05-05 | yes | yes |
| 313-424 | T-Mobile | DETROITZN1 | – | yes | yes |
| 313-425 | AT&T | DETROITZN6 | – | yes | yes |
| 313-426 | Bandwidth | DETROITZN1 | 2017-01-12 | yes | yes |
| 313-427 | Onvoy | DETROITZN6 | 2008-10-03 | yes | yes |
| 313-428 | T-Mobile | DETROITZN5 | 2012-08-29 | yes | yes |
| 313-429 | AT&T | DETROITZN6 | – | yes | yes |
| 313-430 | American Messaging | DETROITZN1 | – | – | yes |
| 313-431 | T-Mobile | DETROITZN4 | 2023-08-04 | yes | yes |
| 313-432 | Lumen | DETROITZN2 | – | yes | yes |
| 313-433 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-434 | Verizon | DETROITZN5 | – | yes | yes |
| 313-435 | Onvoy | DETROITZN6 | 2023-06-20 | yes | yes |
| 313-436 | AT&T | DETROITZN6 | – | yes | yes |
| 313-437 | AT&T | DETROITZN4 | 2010-03-19 | yes | yes |
| 313-438 | AT&T | DETROITZN6 | – | yes | yes |
| 313-439 | AT&T | DETROITZN5 | 2023-11-07 | yes | yes |
| 313-440 | Spok | DETROITZN5 | – | – | yes |
| 313-441 | AT&T | DETROITZN6 | – | – | yes |
| 313-442 | AT&T | DETROITZN1 | – | yes | yes |
| 313-443 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-444 | Windstream | DETROITZN2 | 2009-04-16 | yes | yes |
| 313-445 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-446 | AT&T | DETROITZN1 | – | yes | yes |
| 313-447 | T-Mobile | DETROITZN2 | 2005-03-28 | yes | yes |
| 313-448 | AT&T | DETROITZN1 | 2010-12-09 | yes | yes |
| 313-449 | Verizon | DETROITZN2 | – | yes | yes |
| 313-450 | Verizon | DETROITZN5 | – | yes | yes |
| 313-451 | Bandwidth | DETROITZN6 | 2010-02-17 | yes | yes |
| 313-452 | AT&T | DETROITZN5 | – | yes | yes |
| 313-453 | INTERACTIVE SERVICES NETWORK, INC. | DETROITZN2 | – | – | yes |
| 313-454 | T-Mobile | DETROITZN3 | – | yes | yes |
| 313-455 | T-Mobile | DETROITZN3 | 2010-11-23 | yes | yes |
| 313-456 | AT&T | DETROITZN1 | – | yes | yes |
| 313-457 | Verizon | DETROITZN6 | – | yes | yes |
| 313-458 | Windstream | DETROITZN2 | 2007-07-13 | yes | yes |
| 313-459 | T-Mobile | DETROITZN1 | 2004-10-05 | yes | yes |
| 313-460 | AT&T | DETROITZN5 | – | – | yes |
| 313-461 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-462 | Onvoy | DETROITZN1 | 2010-04-02 | yes | yes |
| 313-463 | AT&T | DETROITZN1 | – | yes | yes |
| 313-464 | EXIANT COMMUNICATIONS LLC | DETROITZN6 | 2019-09-16 | yes | yes |
| 313-465 | AT&T | DETROITZN1 | – | yes | yes |
| 313-466 | T-Mobile | DETROITZN2 | 2004-10-13 | yes | yes |
| 313-467 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-468 | T-Mobile | DETROITZN4 | – | yes | yes |
| 313-469 | Comcast | DETROITZN2 | 2006-09-26 | yes | yes |
| 313-470 | Bandwidth | DETROITZN2 | 2022-10-17 | yes | yes |
| 313-471 | AT&T | DETROITZN1 | – | yes | yes |
| 313-472 | AT&T | DETROITZN5 | 2013-05-17 | yes | yes |
| 313-473 | AT&T | DETROITZN2 | 2008-08-06 | yes | yes |
| 313-474 | Bandwidth | DETROITZN4 | 2019-04-11 | yes | yes |
| 313-475 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-476 | IP HORIZON LLC | DETROITZN6 | 2021-01-28 | yes | yes |
| 313-477 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-478 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-479 | AT&T | DETROITZN6 | 2020-09-02 | yes | yes |
| 313-480 | Verizon | DETROITZN5 | 2020-12-08 | yes | yes |
| 313-481 | INTERACTIVE SERVICES NETWORK, INC. | DETROITZN1 | – | – | yes |
| 313-482 | AT&T | DETROITZN1 | 2008-10-09 | yes | yes |
| 313-483 | Lumen | DETROITZN1 | – | yes | yes |
| 313-484 | Lumen | DETROITZN1 | – | yes | yes |
| 313-485 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-486 | Lumen | DETROITZN5 | – | yes | yes |
| 313-487 | Windstream | DETROITZN1 | – | yes | yes |
| 313-488 | COMMIO, LLC | DETROITZN1 | 2019-05-02 | yes | yes |
| 313-489 | Bandwidth | DETROITZN5 | 2021-01-12 | yes | yes |
| 313-490 | AT&T | DETROITZN6 | 2021-11-18 | yes | yes |
| 313-491 | AT&T | DETROITZN4 | – | yes | yes |
| 313-492 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-493 | AT&T | DETROITZN4 | – | yes | yes |
| 313-494 | AT&T | DETROITZN1 | – | – | yes |
| 313-495 | Verizon | DETROITZN5 | 2012-09-28 | yes | yes |
| 313-496 | AT&T | DETROITZN1 | – | – | yes |
| 313-497 | Bandwidth | DETROITZN5 | – | yes | yes |
| 313-498 | Verizon | DETROITZN5 | – | – | yes |
| 313-499 | AT&T | DETROITZN2 | – | yes | yes |
| 313-500 | Verizon | DETROITZN5 | 2022-08-29 | yes | yes |
| 313-501 | AT&T | DETROITZN6 | 2025-03-27 | yes | yes |
| 313-502 | T-Mobile | DETROITZN1 | 2013-11-27 | yes | yes |
| 313-503 | American Messaging | DETROITZN5 | – | – | yes |
| 313-504 | Onvoy | DETROITZN3 | 2021-11-24 | yes | yes |
| 313-505 | AT&T | DETROITZN5 | – | – | yes |
| 313-506 | AT&T | DETROITZN5 | – | – | yes |
| 313-507 | AT&T | DETROITZN5 | – | – | yes |
| 313-508 | AT&T | DETROITZN5 | – | – | yes |
| 313-509 | T-Mobile | DETROITZN2 | 2016-01-13 | yes | yes |
| 313-510 | AT&T | DETROITZN5 | – | – | yes |
| 313-512 | Lumen | DETROITZN4 | 2020-08-19 | yes | yes |
| 313-513 | Onvoy | DETROITZN1 | 2020-09-02 | yes | yes |
| 313-514 | Onvoy | DETROITZN4 | 2021-06-16 | yes | yes |
| 313-515 | AT&T | DETROITZN5 | – | – | yes |
| 313-516 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-518 | Onvoy | DETROITZN5 | – | yes | yes |
| 313-519 | T-Mobile | DETROITZN3 | 2023-11-16 | yes | yes |
| 313-520 | AT&T | DETROITZN5 | – | – | yes |
| 313-521 | AT&T | DETROITZN2 | – | – | yes |
| 313-522 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-523 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-524 | SKYE TELECOM LLC DBA SKYETEL | DETROITZN1 | – | yes | yes |
| 313-525 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-526 | AT&T | DETROITZN2 | – | – | yes |
| 313-527 | AT&T | DETROITZN2 | – | – | yes |
| 313-528 | Onvoy | DETROITZN6 | – | yes | yes |
| 313-529 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-530 | Verizon | DETROITZN5 | – | – | yes |
| 313-531 | AT&T | DETROITZN5 | – | – | yes |
| 313-532 | AT&T | DETROITZN5 | – | – | yes |
| 313-533 | AT&T | DETROITZN5 | – | – | yes |
| 313-534 | AT&T | DETROITZN5 | – | – | yes |
| 313-535 | AT&T | DETROITZN5 | – | – | yes |
| 313-536 | Bandwidth | DETROITZN4 | 2021-02-16 | yes | yes |
| 313-537 | AT&T | DETROITZN5 | – | – | yes |
| 313-538 | AT&T | DETROITZN5 | – | – | yes |
| 313-539 | AT&T | DETROITZN5 | – | yes | yes |
| 313-540 | Vonage | DETROITZN4 | 2021-10-19 | yes | yes |
| 313-541 | AT&T | DETROITZN5 | – | – | yes |
| 313-542 | Bandwidth | DETROITZN5 | 2021-04-12 | yes | yes |
| 313-543 | AT&T | DETROITZN5 | – | yes | yes |
| 313-544 | T-Mobile | DETROITZN4 | – | yes | yes |
| 313-545 | AT&T | DETROITZN1 | 2013-10-24 | yes | yes |
| 313-546 | AT&T | DETROITZN1 | 2020-07-02 | yes | yes |
| 313-547 | HD CARRIER LLC | DETROITZN5 | 2021-06-02 | yes | yes |
| 313-548 | Bandwidth | DETROITZN2 | 2021-02-12 | yes | yes |
| 313-549 | Verizon | DETROITZN5 | – | – | yes |
| 313-550 | Verizon | DETROITZN5 | – | – | yes |
| 313-551 | AT&T | DETROITZN6 | – | yes | yes |
| 313-552 | HD CARRIER LLC | DETROITZN1 | 2020-09-30 | yes | yes |
| 313-553 | AT&T | DETROITZN1 | – | – | yes |
| 313-554 | AT&T | DETROITZN6 | – | yes | yes |
| 313-556 | AT&T | DETROITZN1 | – | yes | yes |
| 313-557 | Verizon | DETROITZN1 | – | yes | yes |
| 313-558 | Bandwidth | DETROITZN6 | 2014-10-06 | yes | yes |
| 313-559 | Lumen | DETROITZN5 | – | yes | yes |
| 313-560 | AT&T | DETROITZN5 | – | – | yes |
| 313-561 | AT&T | DETROITZN6 | – | – | yes |
| 313-562 | AT&T | DETROITZN6 | – | – | yes |
| 313-563 | AT&T | DETROITZN6 | – | – | yes |
| 313-564 | AT&T | DETROITZN3 | – | yes | yes |
| 313-565 | AT&T | DETROITZN6 | – | – | yes |
| 313-566 | AT&T | DETROITZN1 | – | yes | yes |
| 313-567 | AT&T | DETROITZN1 | – | – | yes |
| 313-568 | AT&T | DETROITZN1 | – | – | yes |
| 313-569 | Verizon | DETROITZN5 | 2021-04-12 | yes | yes |
| 313-570 | Verizon | DETROITZN5 | – | – | yes |
| 313-571 | AT&T | DETROITZN2 | – | yes | yes |
| 313-572 | Onvoy | DETROITZN1 | 2021-07-07 | yes | yes |
| 313-573 | Verizon | DETROITZN5 | – | yes | yes |
| 313-574 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-575 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-576 | AT&T | DETROITZN1 | – | yes | yes |
| 313-577 | AT&T | DETROITZN1 | – | – | yes |
| 313-578 | AT&T | DETROITZN1 | – | yes | yes |
| 313-579 | AT&T | DETROITZN2 | – | yes | yes |
| 313-580 | Verizon | DETROITZN5 | – | – | yes |
| 313-581 | AT&T | DETROITZN6 | – | – | yes |
| 313-582 | AT&T | DETROITZN6 | – | – | yes |
| 313-583 | AT&T | DETROITZN6 | – | yes | yes |
| 313-584 | AT&T | DETROITZN6 | – | – | yes |
| 313-585 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-586 | Lumen | DETROITZN6 | – | yes | yes |
| 313-587 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-588 | Verizon | DETROITZN5 | – | yes | yes |
| 313-589 | T-Mobile | DETROITZN4 | 2023-11-16 | yes | yes |
| 313-590 | Verizon | DETROITZN5 | – | – | yes |
| 313-591 | Bandwidth | DETROITZN3 | 2020-10-14 | yes | yes |
| 313-592 | AT&T | DETROITZN5 | – | – | yes |
| 313-593 | AT&T | DETROITZN6 | – | – | yes |
| 313-594 | AT&T | DETROITZN6 | – | – | yes |
| 313-595 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-596 | AT&T | DETROITZN1 | – | – | yes |
| 313-597 | Verizon | DETROITZN5 | 2021-01-12 | yes | yes |
| 313-598 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-599 | AT&T | DETROITZN5 | – | – | yes |
| 313-600 | Verizon | DETROITZN5 | – | – | yes |
| 313-601 | American Messaging | DETROITZN5 | – | – | yes |
| 313-602 | AT&T | DETROITZN5 | – | – | yes |
| 313-603 | T-Mobile | DETROITZN3 | 2012-10-19 | yes | yes |
| 313-604 | LEAP TELECOM, LLC | DETROITZN1 | – | yes | yes |
| 313-605 | AT&T | DETROITZN5 | – | – | yes |
| 313-606 | American Messaging | DETROITZN5 | – | – | yes |
| 313-607 | AT&T | DETROITZN5 | 2023-12-04 | yes | yes |
| 313-608 | AT&T | DETROITZN5 | – | – | yes |
| 313-609 | American Messaging | DETROITZN5 | – | – | yes |
| 313-610 | AT&T | DETROITZN5 | – | – | yes |
| 313-612 | Onvoy | DETROITZN1 | 2021-11-03 | yes | yes |
| 313-613 | AT&T | DETROITZN5 | – | – | yes |
| 313-614 | Verizon | DETROITZN5 | – | yes | yes |
| 313-615 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-616 | WAVENATION, LLC | DETROITZN1 | 2025-06-09 | yes | yes |
| 313-617 | AT&T | DETROITZN5 | – | – | yes |
| 313-618 | Verizon | DETROITZN5 | – | – | yes |
| 313-619 | AT&T | DETROITZN6 | – | – | yes |
| 313-620 | Dish | DETROITZN3 | 2025-04-02 | yes | yes |
| 313-621 | AT&T | DETROITZN6 | – | – | yes |
| 313-622 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-623 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-624 | AT&T | DETROITZN6 | – | yes | yes |
| 313-625 | INTERACTIVE SERVICES NETWORK, INC. | DETROITZN6 | – | – | yes |
| 313-626 | Bandwidth | DETROITZN2 | 2010-11-11 | yes | yes |
| 313-627 | AT&T | DETROITZN5 | – | yes | yes |
| 313-628 | AT&T | DETROITZN1 | – | – | yes |
| 313-629 | T-Mobile | DETROITZN5 | 2001-11-05 | yes | yes |
| 313-630 | Spok | DETROITZN5 | – | – | yes |
| 313-631 | Onvoy | DETROITZN2 | 2020-09-02 | yes | yes |
| 313-632 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-633 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-634 | Onvoy | DETROITZN3 | 2020-09-02 | yes | yes |
| 313-635 | Comcast | DETROITZN4 | 2015-05-12 | yes | yes |
| 313-636 | Bandwidth | DETROITZN4 | 2016-04-15 | yes | yes |
| 313-637 | Windstream | DETROITZN6 | – | yes | yes |
| 313-638 | Comcast | DETROITZN1 | – | yes | yes |
| 313-639 | T-Mobile | DETROITZN1 | 2022-07-28 | yes | yes |
| 313-640 | AT&T | DETROITZN2 | – | yes | yes |
| 313-641 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-642 | AT&T | DETROITZN2 | – | yes | yes |
| 313-643 | Verizon | DETROITZN5 | – | yes | yes |
| 313-644 | Bandwidth | DETROITZN3 | 2021-04-14 | yes | yes |
| 313-645 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-646 | Comcast | DETROITZN4 | – | yes | yes |
| 313-647 | AT&T | DETROITZN2 | – | yes | yes |
| 313-648 | Verizon | DETROITZN5 | – | yes | yes |
| 313-649 | T-Mobile | DETROITZN2 | 2011-10-06 | yes | yes |
| 313-650 | AT&T | DETROITZN6 | 2021-07-29 | yes | yes |
| 313-651 | Verizon | DETROITZN4 | – | yes | yes |
| 313-652 | T-Mobile | DETROITZN1 | 2016-07-12 | yes | yes |
| 313-653 | AT&T | DETROITZN4 | – | yes | yes |
| 313-654 | AT&T | DETROITZN5 | 2022-03-08 | yes | yes |
| 313-655 | AT&T | DETROITZN5 | – | – | yes |
| 313-656 | AT&T | DETROITZN1 | – | yes | yes |
| 313-657 | AT&T | DETROITZN5 | – | – | yes |
| 313-658 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-659 | AT&T | DETROITZN4 | – | yes | yes |
| 313-660 | American Messaging | DETROITZN5 | – | – | yes |
| 313-661 | T-Mobile | DETROITZN3 | 2022-02-22 | yes | yes |
| 313-662 | Lumen | DETROITZN5 | – | yes | yes |
| 313-663 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-664 | AT&T | DETROITZN1 | – | – | yes |
| 313-665 | AT&T | DETROITZN1 | – | – | yes |
| 313-666 | Onvoy | DETROITZN6 | 2015-09-17 | yes | yes |
| 313-667 | AT&T | DETROITZN1 | – | – | yes |
| 313-668 | INTERACTIVE SERVICES NETWORK, INC. | DETROITZN6 | – | – | yes |
| 313-669 | AT&T | DETROITZN5 | 2022-01-25 | yes | yes |
| 313-670 | Verizon | DETROITZN5 | – | – | yes |
| 313-671 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-672 | INTERACTIVE SERVICES NETWORK, INC. | DETROITZN1 | – | – | yes |
| 313-673 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-674 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-675 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-676 | AT&T | DETROITZN5 | – | yes | yes |
| 313-677 | FRACTEL, LLC | DETROITZN4 | 2019-12-18 | yes | yes |
| 313-678 | AT&T | DETROITZN2 | 2020-08-17 | yes | yes |
| 313-680 | AT&T | DETROITZN5 | – | – | yes |
| 313-681 | AT&T | DETROITZN5 | – | yes | yes |
| 313-682 | AT&T | DETROITZN5 | – | – | yes |
| 313-683 | AT&T | DETROITZN5 | – | yes | yes |
| 313-684 | American Messaging | DETROITZN4 | – | – | yes |
| 313-685 | AT&T | DETROITZN5 | – | yes | yes |
| 313-686 | AT&T | DETROITZN5 | – | yes | yes |
| 313-687 | AT&T | DETROITZN5 | – | yes | yes |
| 313-688 | FRACTEL, LLC | DETROITZN5 | 2019-12-18 | yes | yes |
| 313-689 | AT&T | DETROITZN5 | – | yes | yes |
| 313-690 | AT&T | DETROITZN5 | – | – | yes |
| 313-691 | American Messaging | DETROITZN5 | – | – | yes |
| 313-692 | INTERACTIVE SERVICES NETWORK, INC. | DETROITZN2 | – | – | yes |
| 313-693 | Comcast | DETROITZN5 | – | yes | yes |
| 313-694 | AT&T | DETROITZN5 | – | yes | yes |
| 313-695 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-696 | NUSO, LLC | DETROITZN4 | – | yes | yes |
| 313-697 | AT&T | DETROITZN5 | 2024-06-07 | yes | yes |
| 313-698 | Onvoy | DETROITZN3 | 2022-11-23 | yes | yes |
| 313-699 | T-Mobile | DETROITZN4 | 2014-11-07 | yes | yes |
| 313-701 | Verizon | DETROITZN5 | – | – | yes |
| 313-702 | AT&T | DETROITZN5 | – | – | yes |
| 313-703 | Onvoy | DETROITZN5 | – | yes | yes |
| 313-704 | AT&T | DETROITZN5 | – | yes | yes |
| 313-705 | American Messaging | DETROITZN5 | – | – | yes |
| 313-706 | AT&T | DETROITZN5 | – | yes | yes |
| 313-707 | T-Mobile | DETROITZN3 | 2014-11-07 | yes | yes |
| 313-708 | Charter | DETROITZN2 | 2023-02-21 | yes | yes |
| 313-709 | American Messaging | DETROITZN5 | – | – | yes |
| 313-710 | Charter | DETROITZN1 | 2019-09-10 | yes | yes |
| 313-712 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-713 | T-Mobile | DETROITZN5 | 2011-08-31 | yes | yes |
| 313-714 | American Messaging | DETROITZN5 | – | – | yes |
| 313-715 | AT&T | DETROITZN5 | – | yes | yes |
| 313-716 | Verizon | DETROITZN5 | 2024-03-28 | yes | yes |
| 313-717 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-718 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-719 | AT&T | DETROITZN5 | – | – | yes |
| 313-720 | Verizon | DETROITZN5 | – | – | yes |
| 313-721 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-722 | AT&T | DETROITZN6 | – | yes | yes |
| 313-723 | T-Mobile | DETROITZN4 | 2013-12-03 | yes | yes |
| 313-724 | AT&T | DETROITZN6 | – | yes | yes |
| 313-725 | Verizon | DETROITZN1 | 2013-05-13 | yes | yes |
| 313-726 | TON80 COMMUNICATIONS, LLC | DETROITZN6 | 2022-02-28 | yes | yes |
| 313-727 | AT&T | DETROITZN5 | 2001-05-14 | – | yes |
| 313-728 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-729 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-730 | AT&T | DETROITZN6 | – | yes | yes |
| 313-731 | Verizon | DETROITZN3 | – | yes | yes |
| 313-732 | Verizon | DETROITZN2 | – | yes | yes |
| 313-733 | Verizon | DETROITZN3 | – | yes | yes |
| 313-734 | T-Mobile | DETROITZN1 | 2025-03-06 | yes | yes |
| 313-735 | AT&T | DETROITZN5 | 2024-09-13 | yes | yes |
| 313-736 | Verizon | DETROITZN4 | – | yes | yes |
| 313-737 | AT&T | DETROITZN5 | – | – | yes |
| 313-738 | AT&T | DETROITZN5 | 2024-04-05 | yes | yes |
| 313-739 | AT&T | DETROITZN4 | – | yes | yes |
| 313-740 | AT&T | DETROITZN5 | – | yes | yes |
| 313-741 | AT&T | DETROITZN6 | 2024-05-22 | yes | yes |
| 313-742 | T-Mobile | DETROITZN1 | – | yes | yes |
| 313-743 | Verizon | DETROITZN2 | – | yes | yes |
| 313-744 | T-Mobile | DETROITZN4 | 2011-01-07 | yes | yes |
| 313-745 | AT&T | DETROITZN1 | – | – | yes |
| 313-746 | TON80 COMMUNICATIONS, LLC | DETROITZN1 | 2022-02-18 | yes | yes |
| 313-747 | T-Mobile | DETROITZN4 | 2015-05-11 | yes | yes |
| 313-748 | Verizon | DETROITZN1 | 2001-08-15 | yes | yes |
| 313-749 | Verizon | DETROITZN6 | – | yes | yes |
| 313-750 | T-Mobile | DETROITZN4 | 2024-05-22 | yes | yes |
| 313-751 | Bandwidth | DETROITZN5 | 2018-12-13 | yes | yes |
| 313-752 | T-Mobile | DETROITZN1 | 2016-11-15 | yes | yes |
| 313-753 | AT&T | DETROITZN5 | – | yes | yes |
| 313-754 | American Messaging | DETROITZN5 | – | – | yes |
| 313-755 | AT&T | DETROITZN6 | – | – | yes |
| 313-756 | AT&T | DETROITZN1 | 2020-11-17 | yes | yes |
| 313-757 | Bandwidth | DETROITZN6 | 2011-05-23 | yes | yes |
| 313-758 | AT&T | DETROITZN1 | 2001-05-25 | yes | yes |
| 313-759 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-760 | AT&T | DETROITZN1 | – | – | yes |
| 313-761 | FIVE9, INC. | DETROITZN1 | – | yes | yes |
| 313-762 | T-Mobile | DETROITZN1 | 2024-06-21 | yes | yes |
| 313-763 | Onvoy | DETROITZN5 | 2020-09-02 | yes | yes |
| 313-764 | AT&T | DETROITZN6 | 2024-07-17 | yes | yes |
| 313-765 | Peerless | DETROITZN6 | 2015-09-28 | yes | yes |
| 313-766 | Verizon | DETROITZN5 | – | yes | yes |
| 313-767 | T-Mobile | DETROITZN1 | 2024-09-04 | yes | yes |
| 313-768 | Verizon | DETROITZN6 | – | yes | yes |
| 313-769 | Lumen | DETROITZN6 | – | yes | yes |
| 313-770 | AT&T | DETROITZN5 | – | – | yes |
| 313-771 | Bandwidth | DETROITZN1 | 2017-06-21 | yes | yes |
| 313-772 | AT&T | DETROITZN4 | – | yes | yes |
| 313-773 | T-Mobile | DETROITZN5 | 2013-06-26 | yes | yes |
| 313-774 | AT&T | DETROITZN1 | 2019-03-14 | yes | yes |
| 313-775 | T-Mobile | DETROITZN3 | 2015-08-20 | yes | yes |
| 313-776 | T-Mobile | DETROITZN1 | 2024-10-02 | yes | yes |
| 313-777 | Onvoy | DETROITZN3 | 2015-02-18 | yes | yes |
| 313-778 | AT&T | DETROITZN5 | – | yes | yes |
| 313-779 | T-Mobile | DETROITZN6 | 2001-03-09 | yes | yes |
| 313-780 | AT&T | DETROITZN5 | – | – | yes |
| 313-781 | AT&T | DETROITZN6 | 2024-10-17 | yes | yes |
| 313-782 | AT&T | DETROITZN1 | 2012-06-22 | yes | yes |
| 313-784 | Comcast | DETROITZN1 | 2001-06-06 | yes | yes |
| 313-785 | AT&T | DETROITZN6 | 2025-04-11 | yes | yes |
| 313-786 | AT&T | DETROITZN5 | – | – | yes |
| 313-787 | Charter | DETROITZN6 | 2023-02-21 | yes | yes |
| 313-788 | Peerless | DETROITZN3 | 2015-11-25 | yes | yes |
| 313-789 | AT&T | DETROITZN6 | 2015-01-09 | yes | yes |
| 313-790 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-791 | AT&T | DETROITZN6 | – | yes | yes |
| 313-792 | AT&T | DETROITZN6 | – | – | yes |
| 313-793 | American Messaging | DETROITZN4 | – | – | yes |
| 313-794 | AT&T | DETROITZN5 | – | yes | yes |
| 313-795 | American Messaging | DETROITZN4 | – | – | yes |
| 313-796 | American Messaging | DETROITZN4 | – | – | yes |
| 313-797 | T-Mobile | DETROITZN2 | 2015-09-03 | yes | yes |
| 313-798 | Verizon | DETROITZN5 | 2025-04-22 | yes | yes |
| 313-799 | AT&T | DETROITZN5 | – | yes | yes |
| 313-800 | Onvoy | DETROITZN1 | 2015-08-12 | yes | yes |
| 313-801 | AT&T | DETROITZN5 | – | – | yes |
| 313-802 | AT&T | DETROITZN5 | – | – | yes |
| 313-803 | American Messaging | DETROITZN5 | – | – | yes |
| 313-804 | AT&T | DETROITZN5 | – | yes | yes |
| 313-805 | T-Mobile | DETROITZN5 | 2002-02-13 | yes | yes |
| 313-806 | Verizon | DETROITZN5 | – | – | yes |
| 313-807 | AT&T | DETROITZN5 | 2025-06-20 | yes | yes |
| 313-808 | AT&T | DETROITZN5 | – | yes | yes |
| 313-809 | AT&T | DETROITZN5 | 2025-07-15 | yes | yes |
| 313-810 | T-Mobile | DETROITZN5 | 2025-03-06 | yes | yes |
| 313-812 | T-Mobile | DETROITZN5 | 2013-06-26 | yes | yes |
| 313-813 | American Messaging | DETROITZN4 | – | – | yes |
| 313-814 | American Messaging | DETROITZN4 | – | – | yes |
| 313-815 | Verizon | DETROITZN5 | – | – | yes |
| 313-816 | AIRUS, INC. - MI | DETROITZN1 | 2018-08-31 | yes | yes |
| 313-817 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-818 | T-Mobile | DETROITZN1 | 2014-11-24 | yes | yes |
| 313-819 | AT&T | DETROITZN5 | – | – | yes |
| 313-820 | Verizon | DETROITZN5 | – | – | yes |
| 313-821 | AT&T | DETROITZN2 | – | yes | yes |
| 313-822 | AT&T | DETROITZN2 | – | – | yes |
| 313-823 | AT&T | DETROITZN2 | – | yes | yes |
| 313-824 | AT&T | DETROITZN2 | – | yes | yes |
| 313-825 | AT&T | DETROITZN2 | – | yes | yes |
| 313-826 | AT&T | DETROITZN3 | – | yes | yes |
| 313-827 | Windstream | DETROITZN6 | – | yes | yes |
| 313-828 | Lumen | DETROITZN5 | – | yes | yes |
| 313-829 | T-Mobile | DETROITZN5 | 2010-09-13 | yes | yes |
| 313-830 | Onvoy | DETROITZN5 | 2025-11-20 | yes | yes |
| 313-831 | AT&T | DETROITZN1 | – | yes | yes |
| 313-832 | AT&T | DETROITZN1 | – | – | yes |
| 313-833 | AT&T | DETROITZN1 | – | – | yes |
| 313-834 | AT&T | DETROITZN4 | – | – | yes |
| 313-835 | AT&T | DETROITZN4 | – | – | yes |
| 313-836 | AT&T | DETROITZN4 | – | – | yes |
| 313-837 | AT&T | DETROITZN4 | – | – | yes |
| 313-838 | AT&T | DETROITZN4 | – | – | yes |
| 313-839 | AT&T | DETROITZN2 | – | – | yes |
| 313-840 | American Messaging | DETROITZN5 | – | – | yes |
| 313-841 | AT&T | DETROITZN6 | – | – | yes |
| 313-842 | AT&T | DETROITZN6 | – | – | yes |
| 313-843 | AT&T | DETROITZN6 | – | – | yes |
| 313-844 | T-Mobile | DETROITZN5 | 2011-08-31 | yes | yes |
| 313-845 | AT&T | DETROITZN6 | – | – | yes |
| 313-846 | AT&T | DETROITZN6 | – | – | yes |
| 313-847 | Verizon | DETROITZN5 | 2026-01-07 | yes | yes |
| 313-848 | T-Mobile | DETROITZN5 | 2010-07-07 | yes | yes |
| 313-849 | AT&T | DETROITZN6 | – | – | yes |
| 313-850 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-851 | American Messaging | DETROITZN6 | – | – | yes |
| 313-852 | AT&T | DETROITZN3 | – | – | yes |
| 313-853 | AT&T | DETROITZN6 | 2026-02-04 | yes | yes |
| 313-854 | AT&T | DETROITZN6 | – | yes | yes |
| 313-855 | T-Mobile | DETROITZN4 | 2014-11-07 | yes | yes |
| 313-856 | Bandwidth | DETROITZN5 | 2018-03-08 | yes | yes |
| 313-857 | AT&T | DETROITZN6 | 2025-09-05 | yes | yes |
| 313-858 | T-Mobile | DETROITZN6 | 2014-08-08 | yes | yes |
| 313-859 | Lumen | DETROITZN5 | – | yes | yes |
| 313-860 | AT&T | DETROITZN5 | 2026-02-04 | yes | yes |
| 313-861 | AT&T | DETROITZN4 | – | – | yes |
| 313-862 | AT&T | DETROITZN4 | – | – | yes |
| 313-863 | AT&T | DETROITZN4 | – | – | yes |
| 313-864 | AT&T | DETROITZN4 | – | – | yes |
| 313-865 | AT&T | DETROITZN3 | – | – | yes |
| 313-866 | AT&T | DETROITZN3 | – | – | yes |
| 313-867 | AT&T | DETROITZN3 | – | – | yes |
| 313-868 | AT&T | DETROITZN3 | – | – | yes |
| 313-869 | AT&T | DETROITZN3 | – | – | yes |
| 313-870 | AT&T | DETROITZN1 | – | yes | yes |
| 313-871 | AT&T | DETROITZN1 | – | – | yes |
| 313-872 | AT&T | DETROITZN1 | – | yes | yes |
| 313-873 | AT&T | DETROITZN1 | – | – | yes |
| 313-874 | AT&T | DETROITZN1 | – | – | yes |
| 313-875 | AT&T | DETROITZN1 | – | – | yes |
| 313-876 | AT&T | DETROITZN1 | – | – | yes |
| 313-877 | AT&T | DETROITZN1 | – | yes | yes |
| 313-878 | AT&T | DETROITZN5 | – | yes | yes |
| 313-879 | Lumen | DETROITZN1 | – | yes | yes |
| 313-880 | VoIP Innovations | DETROITZN1 | 2019-06-17 | yes | yes |
| 313-881 | AT&T | DETROITZN2 | – | – | yes |
| 313-882 | AT&T | DETROITZN2 | – | – | yes |
| 313-883 | AT&T | DETROITZN3 | – | yes | yes |
| 313-884 | AT&T | DETROITZN2 | – | – | yes |
| 313-885 | AT&T | DETROITZN2 | – | – | yes |
| 313-886 | AT&T | DETROITZN2 | – | – | yes |
| 313-887 | Lumen | DETROITZN1 | – | yes | yes |
| 313-888 | Onvoy | DETROITZN1 | 2015-04-09 | yes | yes |
| 313-889 | Bandwidth | DETROITZN5 | 2019-04-11 | yes | yes |
| 313-890 | AT&T | DETROITZN5 | 2026-05-27 | yes | yes |
| 313-891 | AT&T | DETROITZN3 | – | – | yes |
| 313-892 | AT&T | DETROITZN3 | – | – | yes |
| 313-893 | AT&T | DETROITZN3 | – | – | yes |
| 313-894 | AT&T | DETROITZN1 | – | – | yes |
| 313-895 | AT&T | DETROITZN1 | – | yes | yes |
| 313-896 | AT&T | DETROITZN1 | – | yes | yes |
| 313-897 | AT&T | DETROITZN1 | – | – | yes |
| 313-898 | AT&T | DETROITZN1 | – | yes | yes |
| 313-899 | AT&T | DETROITZN1 | – | yes | yes |
| 313-900 | FRACTEL, LLC | DETROITZN5 | 2022-03-10 | yes | yes |
| 313-901 | AT&T | DETROITZN5 | 2026-05-27 | yes | no |
| 313-902 | AT&T | DETROITZN6 | 2026-05-27 | yes | no |
| 313-903 | T-Mobile | DETROITZN6 | – | – | yes |
| 313-904 | AT&T | DETROITZN6 | 2026-04-01 | yes | yes |
| 313-907 | AT&T | DETROITZN5 | 2026-04-01 | yes | yes |
| 313-908 | AT&T | DETROITZN6 | – | yes | yes |
| 313-909 | Verizon | DETROITZN5 | – | – | yes |
| 313-910 | Verizon | DETROITZN5 | – | – | yes |
| 313-912 | Verizon | DETROITZN5 | – | yes | yes |
| 313-913 | T-Mobile | DETROITZN1 | 2016-08-18 | yes | yes |
| 313-914 | AT&T | DETROITZN6 | – | yes | yes |
| 313-915 | Verizon | DETROITZN4 | – | yes | yes |
| 313-916 | AT&T | DETROITZN1 | – | – | yes |
| 313-917 | AT&T | DETROITZN5 | – | – | yes |
| 313-918 | T-Mobile | DETROITZN1 | 2006-02-01 | yes | yes |
| 313-919 | Verizon | DETROITZN5 | – | yes | yes |
| 313-920 | Verizon | DETROITZN5 | – | – | yes |
| 313-921 | AT&T | DETROITZN2 | – | yes | yes |
| 313-922 | AT&T | DETROITZN2 | – | yes | yes |
| 313-923 | AT&T | DETROITZN2 | – | yes | yes |
| 313-924 | AT&T | DETROITZN2 | – | yes | yes |
| 313-925 | AT&T | DETROITZN2 | – | yes | yes |
| 313-926 | AT&T | DETROITZN2 | – | yes | yes |
| 313-927 | AT&T | DETROITZN4 | – | yes | yes |
| 313-928 | AT&T | DETROITZN6 | – | – | yes |
| 313-929 | AT&T | DETROITZN5 | – | – | yes |
| 313-930 | AT&T | DETROITZN5 | 2001-05-25 | yes | yes |
| 313-931 | AT&T | DETROITZN4 | – | – | yes |
| 313-932 | T-Mobile | DETROITZN5 | 2010-07-28 | yes | yes |
| 313-933 | AT&T | DETROITZN4 | – | – | yes |
| 313-934 | AT&T | DETROITZN4 | – | yes | yes |
| 313-935 | AT&T | DETROITZN4 | – | yes | yes |
| 313-936 | T-Mobile | DETROITZN2 | 2014-11-24 | yes | yes |
| 313-937 | AT&T | DETROITZN5 | – | yes | yes |
| 313-938 | Verizon | DETROITZN5 | – | – | yes |
| 313-939 | T-Mobile | DETROITZN2 | 2014-09-02 | yes | yes |
| 313-940 | Spok | DETROITZN5 | – | – | yes |
| 313-941 | AT&T | DETROITZN6 | 2026-05-27 | yes | no |
| 313-942 | AT&T | DETROITZN5 | 2001-08-06 | yes | yes |
| 313-943 | AT&T | DETROITZN6 | – | – | yes |
| 313-944 | FRACTEL, LLC | DETROITZN2 | 2021-04-02 | yes | yes |
| 313-945 | AT&T | DETROITZN6 | – | – | yes |
| 313-946 | FRACTEL, LLC | DETROITZN2 | 2019-12-19 | yes | yes |
| 313-948 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-949 | Verizon | DETROITZN5 | – | – | yes |
| 313-952 | Verizon | DETROITZN5 | – | yes | yes |
| 313-953 | T-Mobile | DETROITZN5 | 2010-09-13 | yes | yes |
| 313-955 | T-Mobile | DETROITZN2 | 2020-06-04 | yes | yes |
| 313-956 | AT&T | DETROITZN3 | – | – | yes |
| 313-957 | AT&T | DETROITZN3 | – | yes | yes |
| 313-958 | Spok | DETROITZN5 | – | – | yes |
| 313-960 | T-Mobile | DETROITZN1 | 2014-07-23 | yes | yes |
| 313-961 | AT&T | DETROITZN1 | – | – | yes |
| 313-962 | AT&T | DETROITZN1 | – | – | yes |
| 313-963 | AT&T | DETROITZN1 | – | – | yes |
| 313-964 | AT&T | DETROITZN1 | – | – | yes |
| 313-965 | AT&T | DETROITZN1 | – | – | yes |
| 313-966 | AT&T | DETROITZN1 | – | – | yes |
| 313-967 | AT&T | DETROITZN1 | – | – | yes |
| 313-969 | Verizon | DETROITZN5 | – | yes | yes |
| 313-970 | AT&T | DETROITZN5 | – | yes | yes |
| 313-971 | T-Mobile | DETROITZN5 | – | yes | yes |
| 313-972 | AT&T | DETROITZN1 | – | – | yes |
| 313-974 | AT&T | DETROITZN1 | – | yes | yes |
| 313-977 | AT&T | DETROITZN5 | – | yes | yes |
| 313-978 | AT&T | DETROITZN5 | – | yes | yes |
| 313-979 | T-Mobile | DETROITZN2 | 2015-05-21 | yes | yes |
| 313-980 | AT&T | DETROITZN5 | – | – | yes |
| 313-982 | AT&T | DETROITZN6 | – | yes | yes |
| 313-983 | AT&T | DETROITZN1 | – | yes | yes |
| 313-985 | T-Mobile | DETROITZN3 | 2015-01-26 | yes | yes |
| 313-986 | Verizon | DETROITZN5 | – | yes | yes |
| 313-989 | Verizon | DETROITZN1 | – | yes | yes |
| 313-990 | American Messaging | DETROITZN5 | – | – | yes |
| 313-992 | Peerless | DETROITZN5 | 2015-10-01 | yes | yes |
| 313-993 | AT&T | DETROITZN1 | – | – | yes |
| 313-995 | T-Mobile | DETROITZN6 | – | yes | yes |
| 313-996 | AT&T | DETROITZN6 | – | yes | yes |
| 313-998 | Onvoy | DETROITZN1 | 2020-09-08 | yes | yes |
| 313-999 | T-Mobile | DETROITZN6 | – | yes | yes |
Frequently asked
How many prefixes does area code 313 have?
769 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,690 thousand-number ranges across 6 rate centers.
What do the first three digits after 313 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 313 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 313 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 485 of 313'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