Seaside, OR — rate center
In NANP numbering, Seaside, Oregon is a rate center — the anchor point for local numbers. It is reached through 503, 971 (multiple area codes serve it).
10 central-office prefixes are currently anchored to this rate center, held by 4 different carriers. Pooling applies to 10 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 Seaside numbers can look completely different while being neighbors — check the prefix, not just the area code.
Treat this data as geography of the number, not of the caller: porting, VoIP and caller-ID spoofing all detach the two. When a call matters, hang up and call back through an official number.
Prefixes anchored to Seaside
| Prefix | Code holder | Pooled |
|---|---|---|
| 503-440 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | Yes |
| 503-470 | T-MOBILE USA, INC. | Yes |
| 503-717 | QWEST CORPORATION | Yes |
| 503-738 | QWEST CORPORATION | Yes |
| 503-739 | NEW CINGULAR WIRELESS PCS, LLC | Yes |
FAQ
What area code is Seaside, OR?
Seaside is served by 2 area codes — 503, 971 — which overlay the same territory.
How many prefixes does Seaside have?
10 active NXX prefixes are anchored to this rate center in NANPA records, held by 4 carriers.
Is a call from a Seaside prefix really from Seaside?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.