← Area code 620
620-283 phone numbers
Numbers 620-283-0000 to 620-283-9999 are assigned to United Wireless Communications, Inc. in Syracuse, KS. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 620-283-0xxx, 620-283-1xxx, 620-283-2xxx, 620-283-4xxx, 620-283-6xxx, 620-283-7xxx, 620-283-8xxx, 620-283-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.