Prefix 412-550 — Pittsburgh Zone 1, PA

NANPA CO code assignment, current as of July 28, 2026.

Area code
412
Prefix (NXX)
550
Rate center
Pittsburgh Zone 1
State
Pennsylvania
Time zone
Eastern
Code holder
ONVOY SPECTRUM, LLC
OCN
624H
Pooled
Yes (thousands-block pooling)
Assigned
2018-06-20
LATA
234

A phone number starting 412-550 was issued in the Pittsburgh Zone 1 rate center of PA — part of area code 412.

NANPA's central-office code records list ONVOY SPECTRUM, LLC (OCN 624H) as the code holder, assigned June 20, 2018. Because 412-550 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

A scammer can display 412-550 without ever touching PA. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

Pittsburgh Zone 1 is part of the Pittsburgh, PA Metropolitan Statistical Area. For routing purposes it sits in LATA 234. Numbers here keep Eastern time.

Neighboring prefixes

Prefixes adjacent to 412-550
PrefixRate centerCode holder
412-547 Clairton BANDWIDTH.COM CLEC, LLC - PA
412-548 Pittsburgh Suburban Zone 17 MCIMETRO ACCESS TRANSMISSION SERVICES LLC
412-549 Kittanning CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA
412-551 Pittsburgh Zone 1 NEW CINGULAR WIRELESS PCS, LLC - IL
412-552 Pittsburgh Zone 1 VERIZON PENNSYLVANIA, INC.
412-553 Pittsburgh Zone 1 VERIZON PENNSYLVANIA, INC.

FAQ

Where is 412-550 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 412-550 numbers?

ONVOY SPECTRUM, LLC 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 412-550 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.