Prefix Information

The prefix 421 is part of area code 512 serving Austin, Texas.

This exchange contains 10,000 possible phone numbers (512-421-0000 through 512-421-9999).

Browse Numbers in This Prefix

512-421-0000-0999 512-421-1000-1999 512-421-2000-2999 512-421-3000-3999 512-421-4000-4999 512-421-5000-5999 512-421-6000-6999 512-421-7000-7999 512-421-8000-8999 512-421-9000-9999

Sample Numbers

(512) 421-0000 (512) 421-1234 (512) 421-2000 (512) 421-3333 (512) 421-4444 (512) 421-5555 (512) 421-6000 (512) 421-7777 (512) 421-8888 (512) 421-9999