Prefix 206-557 — Seattle, WA

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

Area code
206
Prefix (NXX)
557
Rate center
Seattle
State
Washington
Time zone
Pacific
Code holder
NEW CINGULAR WIRELESS PCS, LLC
OCN
6010
Pooled
Yes (thousands-block pooling)
Assigned
2012-10-09
LATA
674

A phone number starting 206-557 was issued in the Seattle rate center of WA — part of area code 206.

The assigned code holder is NEW CINGULAR WIRELESS PCS, LLC, operating company number 6010, assigned October 9, 2012. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

A scammer can display 206-557 without ever touching WA. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

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.

Neighboring prefixes

Prefixes adjacent to 206-557
PrefixRate centerCode holder
206-553 Seattle QWEST CORPORATION
206-554 Seattle QWEST CORPORATION
206-556 Seattle CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA
206-558 Bainbridge Island ONVOY, LLC - WA
206-559 Seattle SPOK, INC.
206-560 Seattle SPOK, INC.

FAQ

Where is 206-557 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 206-557 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 206-557 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.