← Area code 630
630-421 phone numbers
Numbers 630-421-0000 to 630-421-9999 are assigned to Verizon Wireless in Northbrook, IL.
Not assigned to any carrier: 630-421-3xxx, 630-421-4xxx, 630-421-5xxx, 630-421-6xxx, 630-421-7xxx, 630-421-8xxx, 630-421-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.