Prefix Information

The prefix 400 is part of area code 978 serving Lowell, Massachusetts.

This exchange contains 10,000 possible phone numbers (978-400-0000 through 978-400-9999).

Browse Numbers in This Prefix

978-400-0000-0999 978-400-1000-1999 978-400-2000-2999 978-400-3000-3999 978-400-4000-4999 978-400-5000-5999 978-400-6000-6999 978-400-7000-7999 978-400-8000-8999 978-400-9000-9999

Sample Numbers

(978) 400-0000 (978) 400-1234 (978) 400-2000 (978) 400-3333 (978) 400-4444 (978) 400-5555 (978) 400-6000 (978) 400-7777 (978) 400-8888 (978) 400-9999