531-321 phone numbers

Numbers 531-321-0000 to 531-321-9999 are assigned to Verizon Wireless in Adams, NE. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 531-321-7xxx, 531-321-8xxx, 531-321-9xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 531-321