Prefix Information

The prefix 399 is part of area code 351 serving Lowell, Massachusetts.

This exchange contains 10,000 possible phone numbers (351-399-0000 through 351-399-9999).

Browse Numbers in This Prefix

351-399-0000-0999 351-399-1000-1999 351-399-2000-2999 351-399-3000-3999 351-399-4000-4999 351-399-5000-5999 351-399-6000-6999 351-399-7000-7999 351-399-8000-8999 351-399-9000-9999

Sample Numbers

(351) 399-0000 (351) 399-1234 (351) 399-2000 (351) 399-3333 (351) 399-4444 (351) 399-5555 (351) 399-6000 (351) 399-7777 (351) 399-8888 (351) 399-9999