Prefix Information

The prefix 400 is part of area code 713 serving Houston, Texas.

This exchange contains 10,000 possible phone numbers (713-400-0000 through 713-400-9999).

Browse Numbers in This Prefix

713-400-0000-0999 713-400-1000-1999 713-400-2000-2999 713-400-3000-3999 713-400-4000-4999 713-400-5000-5999 713-400-6000-6999 713-400-7000-7999 713-400-8000-8999 713-400-9000-9999

Sample Numbers

(713) 400-0000 (713) 400-1234 (713) 400-2000 (713) 400-3333 (713) 400-4444 (713) 400-5555 (713) 400-6000 (713) 400-7777 (713) 400-8888 (713) 400-9999