PHPHSBZN21 — PA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON PENNSYLVANIA, INC. | 9208 | 5 |
| LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | 3 |
| PAETEC ITEL, LLC | 829J | 3 |
| CORE COMMUNICATIONS, INC. - PA | 3806 | 2 |
| ONVOY, LLC - PA | 547E | 2 |