Prefix 313-435 — Detroit Zone 06, MI

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

Area code
313
Prefix (NXX)
435
Rate center
Detroit Zone 06
State
Michigan
Time zone
Eastern
Code holder
ONVOY, LLCV - MI
OCN
543C
Pooled
Yes (thousands-block pooling)
Assigned
2023-06-20
LATA
340

A phone number starting 313-435 was issued in the Detroit Zone 06 rate center of MI — part of area code 313.

The assigned code holder is ONVOY, LLCV - MI, operating company number 543C, assigned June 20, 2023. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

A scammer can display 313-435 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 313-435
PrefixRate centerCode holder
313-432 Detroit Zone 02 LEVEL 3 COMMUNICATIONS, LLC - MI
313-433 Detroit Zone 05 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC
313-434 Detroit Zone 05 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI
313-436 Detroit Zone 06 MICHIGAN BELL TEL CO
313-437 Detroit Zone 04 TELEPORT COMMUNICATIONS AMERICA, LLC - MI
313-438 Detroit Zone 06 MICHIGAN BELL TEL CO

FAQ

Where is 313-435 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 313-435 numbers?

ONVOY, LLCV - 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 313-435 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.