Prefix 513-217 — Middletown, OH

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

Area code
513
Prefix (NXX)
217
Rate center
Middletown
State
Ohio
Time zone
Eastern
Code holder
CINCINNATI BELL EXTENDED TERRITORIES LLC - OH
OCN
309B
Pooled
Yes (thousands-block pooling)
Assigned
2003-10-30
LATA
328

The 513-217 prefix belongs to area code 513 and is anchored to the Middletown rate center (OH). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Middletown is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. For routing purposes it sits in LATA 328. Numbers here keep Eastern time.

The assigned code holder is CINCINNATI BELL EXTENDED TERRITORIES LLC - OH, operating company number 309B, assigned October 30, 2003. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

Caller ID showing 513-217 is not proof the call came from Middletown: 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 513-217
PrefixRate centerCode holder
513-214 Cincinnati LEVEL 3 COMMUNICATIONS, LLC - OH
513-215 Cincinnati CINCINNATI BELL
513-216 Bethel BANDWIDTH.COM CLEC, LLC - OH
513-218 Cincinnati CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH
513-219 Cincinnati AMERICAN MESSAGING SERVICES, LLC
513-220 Cincinnati SKYE TELECOM LLC DBA SKYETEL

FAQ

Where is 513-217 located?

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

Which company owns 513-217 numbers?

CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 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 513-217 safe to answer?

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