Prefix Information

The prefix 581 is part of area code 351 serving Lowell, Massachusetts.

This exchange contains 10,000 possible phone numbers (351-581-0000 through 351-581-9999).

Browse Numbers in This Prefix

351-581-0000-0999 351-581-1000-1999 351-581-2000-2999 351-581-3000-3999 351-581-4000-4999 351-581-5000-5999 351-581-6000-6999 351-581-7000-7999 351-581-8000-8999 351-581-9000-9999

Sample Numbers

(351) 581-0000 (351) 581-1234 (351) 581-2000 (351) 581-3333 (351) 581-4444 (351) 581-5555 (351) 581-6000 (351) 581-7777 (351) 581-8888 (351) 581-9999