Prefix Information

The prefix 640 is part of area code 991 serving Unknown, Unknown.

This exchange contains 10,000 possible phone numbers (991-640-0000 through 991-640-9999).

Browse Numbers in This Prefix

991-640-0000-0999 991-640-1000-1999 991-640-2000-2999 991-640-3000-3999 991-640-4000-4999 991-640-5000-5999 991-640-6000-6999 991-640-7000-7999 991-640-8000-8999 991-640-9000-9999

Sample Numbers

(991) 640-0000 (991) 640-1234 (991) 640-2000 (991) 640-3333 (991) 640-4444 (991) 640-5555 (991) 640-6000 (991) 640-7777 (991) 640-8888 (991) 640-9999