← Area code 559
559-609 phone numbers
Numbers 559-609-0000 to 559-609-9999 are assigned to Telnyx LLC in Stratford, CA. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 559-609-1xxx, 559-609-2xxx, 559-609-3xxx, 559-609-4xxx, 559-609-5xxx, 559-609-6xxx, 559-609-8xxx, 559-609-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.