Prefix 313-210 — Detroit Zone 01, MI

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

Area code
313
Prefix (NXX)
210
Rate center
Detroit Zone 01
State
Michigan
Time zone
Eastern
Code holder
FIVE9, INC.
OCN
598J
Pooled
Yes (thousands-block pooling)
Assigned
2023-05-26
LATA
340

Numbers in the 313-210 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 (313-210-XXXX) and pins the number to a billing locality.

NANPA's central-office code records list FIVE9, INC. (OCN 598J) as the code holder, assigned May 26, 2023. Because 313-210 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

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 313-210
PrefixRate centerCode holder
313-207 Detroit Zone 05 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-208 Detroit Zone 01 METROPCS, INC.
313-209 Detroit Zone 01 PEERLESS NETWORK OF MICHIGAN, LLC - MI
313-212 Detroit Zone 05 NEW CINGULAR WIRELESS PCS, LLC - IL
313-213 Detroit Zone 06 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-214 Detroit Zone 05 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC

FAQ

Where is 313-210 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 313-210 numbers?

FIVE9, INC. 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 313-210 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.