Prefix 503-875 — Portland, OR

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

Area code
503
Prefix (NXX)
875
Rate center
Portland
State
Oregon
Time zone
Pacific
Code holder
NEW CINGULAR WIRELESS PCS, LLC
OCN
6010
Pooled
Yes (thousands-block pooling)
Assigned
2006-07-20
LATA
672

Numbers in the 503-875 prefix are registered to the Portland rate center in OR, inside area code 503. The prefix is the second block of a ten-digit US number (503-875-XXXX) and pins the number to a billing locality.

Code-holder of record: NEW CINGULAR WIRELESS PCS, LLC (OCN 6010), assigned July 20, 2006. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 503-875 numbers may be served by different companies.

The rate center lies in the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area. The serving LATA is 672. Local time follows the Pacific zone.

Spoofing means this prefix on your screen doesn't guarantee a Portland caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 503-875
PrefixRate centerCode holder
503-872 Portland QWEST CORPORATION
503-873 Silverton ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER
503-874 Silverton ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER
503-876 Willamina UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR
503-877 Salem CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR
503-878 Stafford-sandy MCIMETRO ACCESS TRANSMISSION SERVICES LLC

FAQ

Where is 503-875 located?

The prefix is assigned to the Portland rate center in OR, area code 503. It is part of the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area.

Which company owns 503-875 numbers?

NEW CINGULAR WIRELESS PCS, 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 503-875 safe to answer?

The prefix itself says nothing about the caller. Legitimate Portland businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.