← Area code 425
425-581 phone numbers
Numbers 425-581-0000 to 425-581-9999 are assigned to New Cingular Wireless PCS, LLC (rate centre SILVERLAKE, WA, NANPA abbreviation). 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 425-581-1xxx, 425-581-2xxx, 425-581-3xxx, 425-581-4xxx, 425-581-5xxx, 425-581-6xxx, 425-581-7xxx, 425-581-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.