Prefix 313-265 — Detroit Zone 01, MI

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

Area code
313
Prefix (NXX)
265
Rate center
Detroit Zone 01
State
Michigan
Time zone
Eastern
Code holder
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
OCN
2964
Pooled
Yes (thousands-block pooling)
Assigned
2013-06-12
LATA
340

Numbers in the 313-265 prefix are registered to the Detroit Zone 01 rate center in MI, inside area code 313. The prefix is the second block of a ten-digit US number (313-265-XXXX) and pins the number to a billing locality.

Code-holder of record: OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (OCN 2964), assigned June 12, 2013. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 313-265 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 01 caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 313-265
PrefixRate centerCode holder
313-262 Detroit Zone 01 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI
313-263 Detroit Zone 01 LEVEL 3 COMMUNICATIONS, LLC - MI
313-264 Detroit Zone 02 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-266 Detroit Zone 06 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-267 Detroit Zone 02 MICHIGAN BELL TEL CO
313-268 Detroit Zone 05 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI

FAQ

Where is 313-265 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 313-265 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 313-265 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.