Prefix 206-638 — Seattle, WA
The 206-638 prefix belongs to area code 206 and is anchored to the Seattle rate center (WA). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Seattle is part of the Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area. For routing purposes it sits in LATA 674. Numbers here keep Pacific time.
Code-holder of record: IP HORIZON LLC (OCN 515J), assigned March 2, 2021. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 206-638 numbers may be served by different companies.
Caller ID showing 206-638 is not proof the call came from Seattle: 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 |
|---|---|---|
| 206-635 | Seattle | CSC WIRELESS, LLC |
| 206-636 | Seattle | ADVANCED TELECOM SOLUTIONS, LLC |
| 206-637 | Seattle | T-MOBILE USA, INC. |
| 206-639 | Seattle | ONVOY, LLC - WA |
| 206-640 | Seattle | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
| 206-641 | Seattle | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
FAQ
Where is 206-638 located?
The prefix is assigned to the Seattle rate center in WA, area code 206. It is part of the Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area.
Which company owns 206-638 numbers?
IP HORIZON 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 206-638 safe to answer?
The prefix itself says nothing about the caller. Legitimate Seattle businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.