← Area code 520
520-238 phone numbers
Numbers 520-238-0000 to 520-238-9999 are assigned to T-Mobile USA, Inc. in Yuma, AZ.
Not assigned to any carrier: 520-238-0xxx, 520-238-3xxx, 520-238-4xxx, 520-238-5xxx, 520-238-6xxx, 520-238-7xxx, 520-238-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.