Prefix 313-545 — Detroit Zone 01, MI
- Area code
- 313
- Prefix (NXX)
- 545
- Rate center
- Detroit Zone 01
- State
- Michigan
- Time zone
- Eastern
- Code holder
- MICHIGAN BELL TEL CO
- OCN
- 9323
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2013-10-24
- LATA
- 340
The 313-545 prefix belongs to area code 313 and is anchored to the Detroit Zone 01 rate center (MI). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Detroit Zone 01 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 MICHIGAN BELL TEL CO, operating company number 9323, assigned October 24, 2013. 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 313-545 is not proof the call came from Detroit Zone 01: 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 |
|---|---|---|
| 313-542 | Detroit Zone 05 | BANDWIDTH.COM CLEC, LLC - MI |
| 313-543 | Detroit Zone 05 | MICHIGAN BELL TEL CO |
| 313-544 | Detroit Zone 04 | METROPCS, INC. |
| 313-546 | Detroit Zone 01 | TELEPORT COMMUNICATIONS AMERICA, LLC - MI |
| 313-547 | Detroit Zone 05 | HD CARRIER LLC |
| 313-548 | Detroit Zone 02 | BANDWIDTH.COM CLEC, LLC - MI |
FAQ
Where is 313-545 located?
The prefix is assigned to the Detroit Zone 01 rate center in MI, area code 313. It is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area.
Which company owns 313-545 numbers?
MICHIGAN BELL TEL CO 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 313-545 safe to answer?
The prefix itself says nothing about the caller. Legitimate Detroit Zone 01 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.