Prefix Information

The prefix 421 is part of area code 484 serving Allentown, Pennsylvania.

This exchange contains 10,000 possible phone numbers (484-421-0000 through 484-421-9999).

Browse Numbers in This Prefix

484-421-0000-0999 484-421-1000-1999 484-421-2000-2999 484-421-3000-3999 484-421-4000-4999 484-421-5000-5999 484-421-6000-6999 484-421-7000-7999 484-421-8000-8999 484-421-9000-9999

Sample Numbers

(484) 421-0000 (484) 421-1234 (484) 421-2000 (484) 421-3333 (484) 421-4444 (484) 421-5555 (484) 421-6000 (484) 421-7777 (484) 421-8888 (484) 421-9999