Prefix 313-374 — Detroit Zone 06, MI

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

Area code
313
Prefix (NXX)
374
Rate center
Detroit Zone 06
State
Michigan
Time zone
Eastern
Code holder
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
OCN
2964
Pooled
Yes (thousands-block pooling)
Assigned
2013-05-28
LATA
340

A phone number starting 313-374 was issued in the Detroit Zone 06 rate center of MI — part of area code 313.

NANPA's central-office code records list OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (OCN 2964) as the code holder, assigned May 28, 2013. Because 313-374 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

A scammer can display 313-374 without ever touching MI. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

Detroit Zone 06 is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. For routing purposes it sits in LATA 340. Numbers here keep Eastern time.

Neighboring prefixes

Prefixes adjacent to 313-374
PrefixRate centerCode holder
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
313-375 Detroit Zone 06 MICHIGAN BELL TEL CO
313-376 Detroit Zone 05 SPOK, INC.
313-377 Detroit Zone 06 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC

FAQ

Where is 313-374 located?

The prefix is assigned to the Detroit Zone 06 rate center in MI, area code 313. It is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area.

Which company owns 313-374 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 313-374 safe to answer?

The prefix itself says nothing about the caller. Legitimate Detroit Zone 06 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.