Prefix 215-531 — Philadelphia Zone 1, PA
- Area code
- 215
- Prefix (NXX)
- 531
- 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
The 215-531 prefix belongs to area code 215 and is anchored to the Philadelphia Zone 1 rate center (PA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Philadelphia Zone 1 is part of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area. For routing purposes it sits in LATA 228. Numbers here keep Eastern time.
The assigned code holder is NEW CINGULAR WIRELESS PCS, LLC - DC, operating company number 4036, assigned March 21, 2005. 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 215-531 is not proof the call came from Philadelphia Zone 1: 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
| Prefix | Rate center | Code holder |
|---|---|---|
| 215-528 | Philadelphia Zone 2 | VERIZON PENNSYLVANIA, INC. |
| 215-529 | Quakertown | VERIZON PENNSYLVANIA, INC. |
| 215-530 | Philadelphia Suburban Zone 33 | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 215-532 | Philadelphia Suburban Zone 43 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA |
| 215-533 | Philadelphia Zone 4 | VERIZON PENNSYLVANIA, INC. |
| 215-534 | Doylestown | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA |
FAQ
Where is 215-531 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 215-531 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 215-531 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.