Pittsburgh Zone 4, PA — rate center
- State
- Pennsylvania
- Active prefixes
- 25
- Carriers
- 7
- Pooled prefixes
- 18
- LATA
- 234
- Metro area
- Pittsburgh, PA MSA
In NANP numbering, Pittsburgh Zone 4, Pennsylvania is a rate center — the anchor point for local numbers. It is reached through 412, 878 (multiple area codes serve it).
NANPA records show 25 active prefixes here, held by 7 different carriers. Pooling applies to 18 of them — individual thousands-blocks may belong to different companies.
The rate center belongs to the Pittsburgh, PA Metropolitan Statistical Area. Routing-wise it sits in LATA 234.
Because 412, 878 all serve this territory, two Pittsburgh Zone 4 numbers can look completely different while being neighbors — check the prefix, not just the area code.
As always with US numbering: a prefix anchored to Pittsburgh Zone 4 tells you where the block was issued. The person calling may have ported the number, moved away, or be spoofing it entirely — verify callers through independently found contact details.
Prefixes anchored to Pittsburgh Zone 4
| Prefix | Code holder | Pooled |
|---|---|---|
| 412-241 | VERIZON PENNSYLVANIA, INC. | No |
| 412-242 | VERIZON PENNSYLVANIA, INC. | No |
| 412-243 | VERIZON PENNSYLVANIA, INC. | No |
| 412-244 | VERIZON PENNSYLVANIA, INC. | No |
| 412-247 | VERIZON PENNSYLVANIA, INC. | Yes |
| 412-256 | VERIZON PENNSYLVANIA, INC. | Yes |
| 412-271 | VERIZON PENNSYLVANIA, INC. | No |
| 412-273 | VERIZON PENNSYLVANIA, INC. | Yes |
| 412-336 | LEVEL 3 COMMUNICATIONS, LLC - PA | Yes |
| 412-342 | PAETEC ITEL, LLC | Yes |
| 412-351 | VERIZON PENNSYLVANIA, INC. | Yes |
| 412-371 | VERIZON PENNSYLVANIA, INC. | No |
| 412-436 | PAETEC ITEL, LLC | Yes |
| 412-473 | VERIZON PENNSYLVANIA, INC. | Yes |
| 412-501 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 412-540 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 412-545 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 412-636 | VERIZON PENNSYLVANIA, INC. | Yes |
| 412-723 | LEVEL 3 COMMUNICATIONS, LLC - PA | Yes |
| 412-727 | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | Yes |
| 412-731 | VERIZON PENNSYLVANIA, INC. | No |
| 412-764 | ONVOY, LLC - PA | Yes |
| 412-871 | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | Yes |
| 412-941 | ONVOY, LLC - PA | Yes |
FAQ
What area code is Pittsburgh Zone 4, PA?
Pittsburgh Zone 4 is served by 2 area codes — 412, 878 — which overlay the same territory.
How many prefixes does Pittsburgh Zone 4 have?
25 active NXX prefixes are anchored to this rate center in NANPA records, held by 7 carriers.
Is a call from a Pittsburgh Zone 4 prefix really from Pittsburgh Zone 4?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.