Prefix 412-643 — Pittsburgh Zone 1, PA
- Area code
- 412
- Prefix (NXX)
- 643
- Rate center
- Pittsburgh Zone 1
- State
- Pennsylvania
- Time zone
- Eastern
- Code holder
- ONVOY, LLC - PA
- OCN
- 547E
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2019-05-20
- LATA
- 234
412-643 identifies a block of numbers in Pittsburgh Zone 1, PA, within the 412 area code. Every US prefix is tied to exactly one rate center; this one is Pittsburgh Zone 1.
The rate center lies in the Pittsburgh, PA Metropolitan Statistical Area. The serving LATA is 234. Local time follows the Eastern zone.
Treat the on-screen number as a hint, not evidence — 412-643 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
The assigned code holder is ONVOY, LLC - PA, operating company number 547E, assigned May 20, 2019. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 412-640 | Pittsburgh Suburban Zone 14 | SPOK, INC. |
| 412-641 | Pittsburgh Zone 1 | VERIZON PENNSYLVANIA, INC. |
| 412-642 | Pittsburgh Zone 1 | VERIZON PENNSYLVANIA, INC. |
| 412-644 | Pittsburgh Zone 1 | VERIZON PENNSYLVANIA, INC. |
| 412-645 | Pittsburgh Zone 1 | VERIZON PENNSYLVANIA, INC. |
| 412-646 | Pittsburgh Suburban Zone 22 | COMCAST IP PHONE, LLC |
FAQ
Where is 412-643 located?
The prefix is assigned to the Pittsburgh Zone 1 rate center in PA, area code 412. It is part of the Pittsburgh, PA Metropolitan Statistical Area.
Which company owns 412-643 numbers?
ONVOY, LLC - PA holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 412-643 safe to answer?
The prefix itself says nothing about the caller. Legitimate Pittsburgh Zone 1 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.