Prefix Information

The prefix 603 is part of area code 978 serving Lowell, Massachusetts.

This exchange contains 10,000 possible phone numbers (978-603-0000 through 978-603-9999).

Browse Numbers in This Prefix

978-603-0000-0999 978-603-1000-1999 978-603-2000-2999 978-603-3000-3999 978-603-4000-4999 978-603-5000-5999 978-603-6000-6999 978-603-7000-7999 978-603-8000-8999 978-603-9000-9999

Sample Numbers

(978) 603-0000 (978) 603-1234 (978) 603-2000 (978) 603-3333 (978) 603-4444 (978) 603-5555 (978) 603-6000 (978) 603-7777 (978) 603-8888 (978) 603-9999