Prefix 513-628 — Cincinnati, OH

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

The 513-628 prefix belongs to area code 513 and is anchored to the Cincinnati rate center (OH). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Cincinnati is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. For routing purposes it sits in LATA 922. Numbers here keep Eastern time.

NANPA's central-office code records list NEW CINGULAR WIRELESS PCS, LLC - IL (OCN 6534) as the code holder, assigned October 16, 2007. Because 513-628 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Caller ID showing 513-628 is not proof the call came from Cincinnati: 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

FAQ

Where is 513-628 located?

The prefix is assigned to the Cincinnati rate center in OH, area code 513. It is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area.

Which company owns 513-628 numbers?

NEW CINGULAR WIRELESS PCS, LLC - IL 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 513-628 safe to answer?

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