Telephone Area 603. Page 9.

Prefix: +1603

This prefix is distributed within the state New Hampshire

The largest city in the region is Manchester

Time Zone: Eastern

Winter time: UTC-5

Summer time: UTC-4

Below on the map, there is indicated the largest city in the telephone area +1-603-...-.... New Hampshire Manchester.

If you notice any errors of any community’s location on the map, please report it via the feedback form.

Phone numbers +1-603-YYY-YYYY

Other pages: 12345678910

Company	District	Major City	Prefix
No New England Tel Op DBA Fairpoint Comm	Grafton	Woodsville, NH	+1-603989-SSSS
Bell Atlantic Nynex Mobile	Grafton	Littleton, NH	+1-603991-SSSS
Level 3 Communications	Grafton	Grafton, NH	+1-603992-SSSS
Freedom Ring Communications	Strafford	Rochester, NH	+1-603994-SSSS
Sprint Spectrum L.p.	Merrimack	Henniker, NH	+1-603995-SSSS
Sprint Spectrum L.p.	Grafton	Plymouth, NH	+1-603996-SSSS
Sprint Spectrum L.p.	Rockingham	Hampton, NH	+1-603997-SSSS
Sprint Spectrum L.p.	Belknap	Laconia, NH	+1-603998-SSSS

If you have not found the required prefix in the table, you can use the search of a full telephone number at the top of the site or the advanced search.

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