Lookup › Area code 603
603 Area Code — Manchester, New Hampshire
Area code 603 serves Manchester, NH.
Most looked-up 603 numbers
- 603-615-5919
- 603-685-9265
- 603-685-8485
- 603-782-8283
- 603-550-4174
- 603-489-3772
- 603-891-1198
- 603-686-5170
- 603-815-1051
- 603-307-0034
- 603-657-6488
- 603-923-7591
Phone prefixes in 603
Carriers serving 603
- Bell Atlantic Nynex Mobile (5 numbers)
- Comcast Ip Phone, LLC (2 numbers)
- Vonage America, LLC (2 numbers)
- Consolidated Comm Of No. New E (2 numbers)
- At&t (1 numbers)
- Onvoy Spectrum, LLC (1 numbers)
Frequently asked questions
Where is area code 603?
Area code 603 serves Manchester, NH.
What prefixes are in area code 603?
Phone2.io tracks 13 phone prefixes in area code 603, with carrier and spam-report data on individual numbers.
More about area code 603
Area code 603 overview, history, and local numbers · Get a NH phone number
Last updated: March 13, 2026