Prefix 313-364 — Detroit Zone 04, MI

NANPA CO code assignment, current as of July 28, 2026.

Area code
313
Prefix (NXX)
364
Rate center
Detroit Zone 04
State
Michigan
Time zone
Eastern
Code holder
BANDWIDTH.COM CLEC, LLC - MI
OCN
991E
Pooled
Yes (thousands-block pooling)
Assigned
2018-03-30
LATA
340

Numbers in the 313-364 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 (313-364-XXXX) and pins the number to a billing locality.

The assigned code holder is BANDWIDTH.COM CLEC, LLC - MI, operating company number 991E, assigned March 30, 2018. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

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

Prefixes adjacent to 313-364
PrefixRate centerCode holder
313-361 Detroit Zone 01 MICHIGAN BELL TEL CO
313-362 Detroit Zone 05 PAETEC ITEL, LLC
313-363 Detroit Zone 05 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-365 Detroit Zone 03 MICHIGAN BELL TEL CO
313-366 Detroit Zone 03 MICHIGAN BELL TEL CO
313-367 Detroit Zone 04 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC

FAQ

Where is 313-364 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 313-364 numbers?

BANDWIDTH.COM CLEC, LLC - MI 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 313-364 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.