← Area code 623
623-622 phone numbers
Numbers 623-622-0000 to 623-622-9999 are assigned to Boost Subscriberco L.L.C. in Phoenix, AZ. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 623-622-1xxx, 623-622-2xxx, 623-622-3xxx, 623-622-4xxx, 623-622-5xxx, 623-622-7xxx, 623-622-8xxx, 623-622-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.