| District of Pennsylvania area codes: 484 | |
|---|---|
| Country | United States |
| State/Province | Pennsylvania |
| Major City | Philadelphia |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 484-365 | Chester | Oxford, PA | Broadwing Communications |
| 484-366 | Montgomery | Pottstown, PA | New Cingular Wireless PCS - DC |
| 484-367 | Philadelphia | Philadelphia, PA | Allegiance Telecom Of Pennsylvania |
| 484-368 | Montgomery | Conshohocken, PA | Sprint Spectrum L.p. |
| 484-369 | Montgomery | Royersford, PA | Sprint Spectrum L.p. |
| 484-371 | Chester | Landenberg, PA | Level 3 Communications |
| 484-372 | Chester | Landenberg, PA | Atx Telecommunications Services, Ltd |
| 484-373 | Northampton | Easton, PA | Verizon Pennsylvania |
| 484-374 | Montgomery | Pottstown, PA | Ctsi |
| 484-375 | Lehigh | Allentown, PA | Allegiance Telecom Of Pennsylvania |
| 484-376 | Chester | Landenberg, PA | Cavalier Telephone (mid-atlantic) |
| 484-377 | Philadelphia | Philadelphia, PA | Xo Communications Services Inc |
| 484-378 | Chester | Coatesville, PA | Infinite Communication |
| 484-380 | Montgomery | Bryn Mawr, PA | Netcarrier Telecom |
| 484-381 | Philadelphia | Philadelphia, PA | Broadwing Communications |
| 484-382 | Philadelphia | Philadelphia, PA | Global Crossing Local Services-pa |
| 484-383 | Philadelphia | Philadelphia, PA | Level 3 Communications |
| 484-384 | Philadelphia | Philadelphia, PA | Paetec Communications |
| 484-385 | Philadelphia | Philadelphia, PA | Us Lec Of Pennsylvania |
| 484-386 | Montgomery | Bryn Mawr, PA | Atx Telecommunications Services, Ltd |
There are 673 prefixes, In the code area, the major cities are Allentown, PA;Bethlehem, PA;Chester, PA;Drexel Hil. The major city is Philadelphia.