Tillamook, OR — rate center
In NANP numbering, Tillamook, Oregon is a rate center — the anchor point for local numbers. It is reached through 503, 971 (multiple area codes serve it).
The rate center currently carries 18 working prefixes, held by 7 different carriers. Pooling applies to 16 of them — individual thousands-blocks may belong to different companies.
Routing-wise it sits in LATA 672.
Because 503, 971 all serve this territory, two Tillamook numbers can look completely different while being neighbors — check the prefix, not just the area code.
A Tillamook prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Tillamook
| Prefix | Code holder | Pooled |
|---|---|---|
| 503-354 | LEVEL 3 COMMUNICATIONS, LLC - OR | Yes |
| 503-374 | LEVEL 3 COMMUNICATIONS, LLC - OR | Yes |
| 503-457 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | Yes |
| 503-801 | NEW CINGULAR WIRELESS PCS, LLC | Yes |
| 503-812 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | Yes |
| 503-815 | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | No |
| 503-842 | UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR | No |
FAQ
What area code is Tillamook, OR?
Tillamook is served by 2 area codes — 503, 971 — which overlay the same territory.
How many prefixes does Tillamook have?
18 active NXX prefixes are anchored to this rate center in NANPA records, held by 7 carriers.
Is a call from a Tillamook prefix really from Tillamook?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.