Pittsburgh Suburban Zone 21, PA — rate center
- State
- Pennsylvania
- Area codes
- 412
- Active prefixes
- 11
- Carriers
- 8
- Pooled prefixes
- 8
- LATA
- 234
- Metro area
- Pittsburgh, PA MSA
In NANP numbering, Pittsburgh Suburban Zone 21, Pennsylvania is a rate center — the anchor point for local numbers. It is reached through 412.
NANPA records show 11 active prefixes here, held by 8 different carriers. Pooling applies to 8 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.
As always with US numbering: a prefix anchored to Pittsburgh Suburban Zone 21 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 Suburban Zone 21
| Prefix | Code holder | Pooled |
|---|---|---|
| 412-573 | PAETEC ITEL, LLC | Yes |
| 412-701 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 412-704 | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | Yes |
| 412-712 | FIDIUM ENTERPRISE SERVICES, LLC | Yes |
| 412-744 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 412-793 | VERIZON PENNSYLVANIA, INC. | No |
| 412-795 | VERIZON PENNSYLVANIA, INC. | No |
| 412-798 | VERIZON PENNSYLVANIA, INC. | No |
| 412-827 | BANDWIDTH.COM CLEC, LLC - PA | Yes |
| 412-832 | ONVOY SPECTRUM, LLC | Yes |
| 412-990 | ONVOY, LLC - PA | Yes |
FAQ
What area code is Pittsburgh Suburban Zone 21, PA?
Pittsburgh Suburban Zone 21 numbers use area code 412.
How many prefixes does Pittsburgh Suburban Zone 21 have?
11 active NXX prefixes are anchored to this rate center in NANPA records, held by 8 carriers.
Is a call from a Pittsburgh Suburban Zone 21 prefix really from Pittsburgh Suburban Zone 21?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.