← Area code 620
620-405 phone numbers
Numbers 620-405-0000 to 620-405-9999 are assigned to Verizon Wireless in La Harpe, KS.
Not assigned to any carrier: 620-405-1xxx, 620-405-2xxx, 620-405-3xxx, 620-405-4xxx, 620-405-5xxx, 620-405-6xxx, 620-405-7xxx, 620-405-8xxx, 620-405-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.