Prefix Information

The prefix 640 is part of area code 351 serving Lowell, Massachusetts.

This exchange contains 10,000 possible phone numbers (351-640-0000 through 351-640-9999).

Browse Numbers in This Prefix

351-640-0000-0999 351-640-1000-1999 351-640-2000-2999 351-640-3000-3999 351-640-4000-4999 351-640-5000-5999 351-640-6000-6999 351-640-7000-7999 351-640-8000-8999 351-640-9000-9999

Sample Numbers

(351) 640-0000 (351) 640-1234 (351) 640-2000 (351) 640-3333 (351) 640-4444 (351) 640-5555 (351) 640-6000 (351) 640-7777 (351) 640-8888 (351) 640-9999