Philadelphia Zone 4, PA — rate center
- State
- Pennsylvania
- Active prefixes
- 108
- Carriers
- 22
- Pooled prefixes
- 77
- LATA
- 228
- Metro area
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA
The Philadelphia Zone 4 rate center (Pennsylvania) anchors 108 active prefixes under area codes 215, 267, 445. Rate centers, not city limits, are what phone numbers are legally tied to.
The rate center currently carries 108 working prefixes across 22 carriers. 77 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area. Routing-wise it sits in LATA 228.
Multiple area codes over one rate center (215/267/445) is the overlay pattern: same geography, different first three digits.
At 108 prefixes — a ceiling of 1,080,000 numbers — Philadelphia Zone 4 is one of Pennsylvania's heavyweight rate centers.
A Philadelphia Zone 4 prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Philadelphia Zone 4
| Prefix | Code holder | Pooled |
|---|---|---|
| 215-214 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-268 | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | Yes |
| 215-270 | SPOK, INC. | No |
| 215-281 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-288 | VERIZON PENNSYLVANIA, INC. | No |
| 215-289 | VERIZON PENNSYLVANIA, INC. | No |
| 215-305 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 215-330 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-331 | VERIZON PENNSYLVANIA, INC. | No |
| 215-332 | VERIZON PENNSYLVANIA, INC. | No |
| 215-333 | VERIZON PENNSYLVANIA, INC. | No |
| 215-335 | VERIZON PENNSYLVANIA, INC. | No |
| 215-338 | VERIZON PENNSYLVANIA, INC. | No |
| 215-342 | VERIZON PENNSYLVANIA, INC. | No |
| 215-437 | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | Yes |
| 215-464 | VERIZON PENNSYLVANIA, INC. | No |
| 215-501 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-516 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-533 | VERIZON PENNSYLVANIA, INC. | No |
| 215-535 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-537 | VERIZON PENNSYLVANIA, INC. | No |
| 215-543 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-552 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-554 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 215-602 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-612 | VERIZON PENNSYLVANIA, INC. | No |
| 215-613 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | Yes |
| 215-618 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-624 | VERIZON PENNSYLVANIA, INC. | No |
| 215-632 | VERIZON PENNSYLVANIA, INC. | No |
| 215-637 | VERIZON PENNSYLVANIA, INC. | No |
| 215-671 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-673 | VERIZON PENNSYLVANIA, INC. | No |
| 215-676 | VERIZON PENNSYLVANIA, INC. | No |
| 215-677 | VERIZON PENNSYLVANIA, INC. | No |
| 215-695 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-697 | VERIZON PENNSYLVANIA, INC. | No |
| 215-698 | VERIZON PENNSYLVANIA, INC. | No |
| 215-705 | SPOK, INC. | No |
| 215-708 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-722 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-725 | VERIZON PENNSYLVANIA, INC. | No |
| 215-728 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-737 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-742 | VERIZON PENNSYLVANIA, INC. | No |
| 215-743 | VERIZON PENNSYLVANIA, INC. | No |
| 215-744 | VERIZON PENNSYLVANIA, INC. | No |
| 215-745 | VERIZON PENNSYLVANIA, INC. | No |
| 215-770 | ONVOY, LLC - PA | Yes |
| 215-776 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 215-807 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-821 | LEVEL 3 COMMUNICATIONS, LLC - PA | Yes |
| 215-824 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-827 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 215-831 | VERIZON PENNSYLVANIA, INC. | No |
| 215-856 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-904 | AT&T - LOCAL | Yes |
| 215-912 | VERIZON PENNSYLVANIA, INC. | No |
| 215-934 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-941 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 215-960 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-961 | VERIZON PENNSYLVANIA, INC. | Yes |
| 215-969 | VERIZON PENNSYLVANIA, INC. | No |
| 215-992 | PAETEC ITEL, LLC | Yes |
FAQ
What area code is Philadelphia Zone 4, PA?
Philadelphia Zone 4 is served by 3 area codes — 215, 267, 445 — which overlay the same territory.
How many prefixes does Philadelphia Zone 4 have?
108 active NXX prefixes are anchored to this rate center in NANPA records, held by 22 carriers.
Is a call from a Philadelphia Zone 4 prefix really from Philadelphia Zone 4?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.