Detroit Zone 04, MI — rate center
In NANP numbering, Detroit Zone 04, Michigan is a rate center — the anchor point for local numbers. It is reached through 313.
The rate center currently carries 71 working prefixes, held by 14 different carriers. Pooling applies to 47 of them — individual thousands-blocks may belong to different companies.
The rate center belongs to the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. Routing-wise it sits in LATA 340.
A Detroit Zone 04 prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Detroit Zone 04
| Prefix | Code holder | Pooled |
|---|---|---|
| 313-201 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-241 | ONVOY, LLCV - MI | Yes |
| 313-243 | PAETEC ITEL, LLC | Yes |
| 313-270 | MICHIGAN BELL TEL CO | Yes |
| 313-272 | MICHIGAN BELL TEL CO | No |
| 313-273 | MICHIGAN BELL TEL CO | No |
| 313-279 | LEVEL 3 COMMUNICATIONS, LLC - MI | Yes |
| 313-288 | PAETEC ITEL, LLC | Yes |
| 313-306 | BANDWIDTH.COM CLEC, LLC - MI | Yes |
| 313-307 | ONVOY, LLCV - MI | Yes |
| 313-325 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-340 | MICHIGAN BELL TEL CO | Yes |
| 313-341 | MICHIGAN BELL TEL CO | No |
| 313-342 | MICHIGAN BELL TEL CO | No |
| 313-345 | MICHIGAN BELL TEL CO | No |
| 313-364 | BANDWIDTH.COM CLEC, LLC - MI | Yes |
| 313-367 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-370 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-397 | COMCAST IP PHONE, LLC | Yes |
| 313-413 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-416 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Yes |
| 313-431 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-437 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | Yes |
| 313-468 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-474 | BANDWIDTH.COM CLEC, LLC - MI | Yes |
| 313-491 | MICHIGAN BELL TEL CO | Yes |
| 313-493 | MICHIGAN BELL TEL CO | Yes |
| 313-512 | LEVEL 3 COMMUNICATIONS, LLC - MI | Yes |
| 313-514 | ONVOY, LLCV - MI | Yes |
| 313-536 | BANDWIDTH.COM CLEC, LLC - MI | Yes |
| 313-540 | VONAGE AMERICA LLC | Yes |
| 313-544 | METROPCS, INC. | Yes |
| 313-589 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-635 | COMCAST IP PHONE, LLC | Yes |
| 313-636 | BANDWIDTH.COM CLEC, LLC - MI | Yes |
| 313-646 | COMCAST IP PHONE, LLC | Yes |
| 313-651 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Yes |
| 313-653 | MICHIGAN BELL TEL CO | Yes |
| 313-659 | MICHIGAN BELL TEL CO | Yes |
| 313-677 | FRACTEL, LLC | Yes |
| 313-684 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-696 | NUSO, LLC | Yes |
| 313-699 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-723 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-736 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Yes |
| 313-739 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI | Yes |
| 313-744 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-747 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-750 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-772 | MICHIGAN BELL TEL CO | Yes |
| 313-793 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-795 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-796 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-813 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-814 | AMERICAN MESSAGING SERVICES, LLC | No |
| 313-834 | MICHIGAN BELL TEL CO | No |
| 313-835 | MICHIGAN BELL TEL CO | No |
| 313-836 | MICHIGAN BELL TEL CO | No |
| 313-837 | MICHIGAN BELL TEL CO | No |
| 313-838 | MICHIGAN BELL TEL CO | No |
| 313-855 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | Yes |
| 313-861 | MICHIGAN BELL TEL CO | No |
| 313-862 | MICHIGAN BELL TEL CO | No |
| 313-863 | MICHIGAN BELL TEL CO | No |
| 313-864 | MICHIGAN BELL TEL CO | No |
| 313-915 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Yes |
| 313-927 | MICHIGAN BELL TEL CO | Yes |
| 313-931 | MICHIGAN BELL TEL CO | No |
| 313-933 | MICHIGAN BELL TEL CO | No |
| 313-934 | MICHIGAN BELL TEL CO | Yes |
| 313-935 | MICHIGAN BELL TEL CO | Yes |
FAQ
What area code is Detroit Zone 04, MI?
Detroit Zone 04 numbers use area code 313.
How many prefixes does Detroit Zone 04 have?
71 active NXX prefixes are anchored to this rate center in NANPA records, held by 14 carriers.
Is a call from a Detroit Zone 04 prefix really from Detroit Zone 04?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.