Prefix 313-370 — Detroit Zone 04, MI
- Area code
- 313
- Prefix (NXX)
- 370
- Rate center
- Detroit Zone 04
- State
- Michigan
- Time zone
- Eastern
- Code holder
- OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
- OCN
- 2964
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2023-03-03
- LATA
- 340
The 313-370 prefix belongs to area code 313 and is anchored to the Detroit Zone 04 rate center (MI). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Detroit Zone 04 is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. For routing purposes it sits in LATA 340. Numbers here keep Eastern time.
The assigned code holder is OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC, operating company number 2964, assigned March 3, 2023. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
Caller ID showing 313-370 is not proof the call came from Detroit Zone 04: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 313-367 | Detroit Zone 04 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC |
| 313-368 | Detroit Zone 03 | MICHIGAN BELL TEL CO |
| 313-369 | Detroit Zone 03 | MICHIGAN BELL TEL CO |
| 313-371 | Detroit Zone 02 | MICHIGAN BELL TEL CO |
| 313-372 | Detroit Zone 02 | MICHIGAN BELL TEL CO |
| 313-373 | Detroit Zone 01 | MICHIGAN BELL TEL CO |
FAQ
Where is 313-370 located?
The prefix is assigned to the Detroit Zone 04 rate center in MI, area code 313. It is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area.
Which company owns 313-370 numbers?
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 313-370 safe to answer?
The prefix itself says nothing about the caller. Legitimate Detroit Zone 04 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.