Prefix 313-209 — Detroit Zone 01, MI

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

Area code
313
Prefix (NXX)
209
Rate center
Detroit Zone 01
State
Michigan
Time zone
Eastern
Code holder
PEERLESS NETWORK OF MICHIGAN, LLC - MI
OCN
933G
Pooled
Yes (thousands-block pooling)
Assigned
2013-03-11
LATA
340

313-209 identifies a block of numbers in Detroit Zone 01, MI, within the 313 area code. Every US prefix is tied to exactly one rate center; this one is Detroit Zone 01.

The rate center lies in the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. The serving LATA is 340. Local time follows the Eastern zone.

Treat the on-screen number as a hint, not evidence — 313-209 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.

Code-holder of record: PEERLESS NETWORK OF MICHIGAN, LLC - MI (OCN 933G), assigned March 11, 2013. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 313-209 numbers may be served by different companies.

Neighboring prefixes

Prefixes adjacent to 313-209
PrefixRate centerCode holder
313-206 Detroit Zone 06 MICHIGAN BELL TEL CO
313-207 Detroit Zone 05 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-208 Detroit Zone 01 METROPCS, INC.
313-210 Detroit Zone 01 FIVE9, INC.
313-212 Detroit Zone 05 NEW CINGULAR WIRELESS PCS, LLC - IL
313-213 Detroit Zone 06 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC

FAQ

Where is 313-209 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 313-209 numbers?

PEERLESS NETWORK OF MICHIGAN, 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 313-209 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.