Prefix Information

The prefix 640 is part of area code 421 serving Unknown, Unknown.

This exchange contains 10,000 possible phone numbers (421-640-0000 through 421-640-9999).

Browse Numbers in This Prefix

421-640-0000-0999 421-640-1000-1999 421-640-2000-2999 421-640-3000-3999 421-640-4000-4999 421-640-5000-5999 421-640-6000-6999 421-640-7000-7999 421-640-8000-8999 421-640-9000-9999

Sample Numbers

(421) 640-0000 (421) 640-1234 (421) 640-2000 (421) 640-3333 (421) 640-4444 (421) 640-5555 (421) 640-6000 (421) 640-7777 (421) 640-8888 (421) 640-9999