Prefix 313-540 — Detroit Zone 04, MI
- Area code
- 313
- Prefix (NXX)
- 540
- Rate center
- Detroit Zone 04
- State
- Michigan
- Time zone
- Eastern
- Code holder
- VONAGE AMERICA LLC
- OCN
- 197D
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2021-10-19
- LATA
- 340
Numbers in the 313-540 prefix are registered to the Detroit Zone 04 rate center in MI, inside area code 313. The prefix is the second block of a ten-digit US number (313-540-XXXX) and pins the number to a billing locality.
Code-holder of record: VONAGE AMERICA LLC (OCN 197D), assigned October 19, 2021. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 313-540 numbers may be served by different companies.
The rate center lies in the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. The serving LATA is 340. Local time follows the Eastern zone.
Spoofing means this prefix on your screen doesn't guarantee a Detroit Zone 04 caller. Verify independently before trusting a request for money or data.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 313-537 | Detroit Zone 05 | MICHIGAN BELL TEL CO |
| 313-538 | Detroit Zone 05 | MICHIGAN BELL TEL CO |
| 313-539 | Detroit Zone 05 | NEW CINGULAR WIRELESS PCS, LLC - IL |
| 313-541 | Detroit Zone 05 | MICHIGAN BELL TEL CO |
| 313-542 | Detroit Zone 05 | BANDWIDTH.COM CLEC, LLC - MI |
| 313-543 | Detroit Zone 05 | MICHIGAN BELL TEL CO |
FAQ
Where is 313-540 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 313-540 numbers?
VONAGE AMERICA 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 313-540 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.