← Area code 206
206-291 phone numbers
Numbers 206-291-0000 to 206-291-9999 are assigned to New Cingular Wireless PCS, LLC in Seattle, WA. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 206-291-1xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.