Prefix 503-593 — Portland, OR
The 503-593 prefix belongs to area code 503 and is anchored to the Portland rate center (OR). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Portland is part of the Portland-Vancouver-Hillsboro, OR-WA Metropolitan Statistical Area. For routing purposes it sits in LATA 672. Numbers here keep Pacific time.
NANPA's central-office code records list CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR (OCN 5820) as the code holder, assigned November 14, 2005. Because 503-593 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Caller ID showing 503-593 is not proof the call came from Portland: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 503-590 | Beaverton | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER |
| 503-591 | Beaverton | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER |
| 503-592 | Canby Needy | LEVEL 3 TELECOM OF OREGON, LLC - OR |
| 503-594 | Clackamas | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
| 503-595 | Portland | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
| 503-596 | Beaverton | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER |
FAQ
Where is 503-593 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 503-593 numbers?
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 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 503-593 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.