← Area code 620
620-652 phone numbers
Numbers 620-652-0000 to 620-652-9999 are assigned to Level 3 Communications, LLC in Fredonia, KS. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 620-652-0xxx, 620-652-2xxx, 620-652-3xxx, 620-652-7xxx, 620-652-8xxx, 620-652-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.