Prefix 612-233 — Twin Cities, MN

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

Area code
612
Prefix (NXX)
233
Rate center
Twin Cities
State
Minnesota
Time zone
Central
Code holder
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
OCN
7229
Pooled
Yes (thousands-block pooling)
Assigned
2004-04-02
LATA
628

The 612-233 prefix belongs to area code 612 and is anchored to the Twin Cities rate center (MN). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Twin Cities is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area. For routing purposes it sits in LATA 628. Numbers here keep Central time.

Code-holder of record: MCIMETRO ACCESS TRANSMISSION SERVICES LLC (OCN 7229), assigned April 2, 2004. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 612-233 numbers may be served by different companies.

Caller ID showing 612-233 is not proof the call came from Twin Cities: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.

Neighboring prefixes

Prefixes adjacent to 612-233
PrefixRate centerCode holder
612-230 Twin Cities ONVOY, LLC - MN
612-231 Twin Cities NEW CINGULAR WIRELESS PCS, LLC - IL
612-232 Twin Cities AERIAL COMMUNICATIONS, INC.
612-234 Twin Cities AT&T - LOCAL
612-235 Twin Cities LEVEL 3 COMMUNICATIONS, LLC - MN
612-236 Twin Cities COMCAST IP PHONE, LLC

FAQ

Where is 612-233 located?

The prefix is assigned to the Twin Cities rate center in MN, area code 612. It is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area.

Which company owns 612-233 numbers?

MCIMETRO ACCESS TRANSMISSION SERVICES 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 612-233 safe to answer?

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