Prefix Information

The prefix 421 is part of area code 713 serving Houston, Texas.

This exchange contains 10,000 possible phone numbers (713-421-0000 through 713-421-9999).

Browse Numbers in This Prefix

713-421-0000-0999 713-421-1000-1999 713-421-2000-2999 713-421-3000-3999 713-421-4000-4999 713-421-5000-5999 713-421-6000-6999 713-421-7000-7999 713-421-8000-8999 713-421-9000-9999

Sample Numbers

(713) 421-0000 (713) 421-1234 (713) 421-2000 (713) 421-3333 (713) 421-4444 (713) 421-5555 (713) 421-6000 (713) 421-7777 (713) 421-8888 (713) 421-9999