Prefix 215-279 — Philadelphia Zone 1, PA

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

Area code
215
Prefix (NXX)
279
Rate center
Philadelphia Zone 1
State
Pennsylvania
Time zone
Eastern
Code holder
NEW CINGULAR WIRELESS PCS, LLC - DC
OCN
4036
Pooled
Yes (thousands-block pooling)
Assigned
2005-03-21
LATA
228

Numbers in the 215-279 prefix are registered to the Philadelphia Zone 1 rate center in PA, inside area code 215. The prefix is the second block of a ten-digit US number (215-279-XXXX) and pins the number to a billing locality.

Code-holder of record: NEW CINGULAR WIRELESS PCS, LLC - DC (OCN 4036), assigned March 21, 2005. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 215-279 numbers may be served by different companies.

The rate center lies in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area. The serving LATA is 228. Local time follows the Eastern zone.

Spoofing means this prefix on your screen doesn't guarantee a Philadelphia Zone 1 caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 215-279
PrefixRate centerCode holder
215-276 Philadelphia Zone 3 VERIZON PENNSYLVANIA, INC.
215-277 Philadelphia Suburban Zone 34 TELEPORT COMMUNICATIONS AMERICA, LLC - PA
215-278 Philadelphia Zone 1 ONVOY, LLC - PA
215-280 Philadelphia Zone 2 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA
215-281 Philadelphia Zone 4 VERIZON PENNSYLVANIA, INC.
215-282 Philadelphia Zone 1 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA

FAQ

Where is 215-279 located?

The prefix is assigned to the Philadelphia Zone 1 rate center in PA, area code 215. It is part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area.

Which company owns 215-279 numbers?

NEW CINGULAR WIRELESS PCS, LLC - DC 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 215-279 safe to answer?

The prefix itself says nothing about the caller. Legitimate Philadelphia Zone 1 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.