Telephone Area 603. Page 2.
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.
Phone numbers +1-603-YYY-YYYY
| Company | District | Major City | Prefix |
|---|---|---|---|
| Bell Atlantic Nynex Mobile | Rockingham | Candia, NH | +1-603370-SSSS |
| Conversent Communications Of New Hampshire | Hillsborough | Peterborough, NH | +1-603371-SSSS |
| Freedom Ring Communications | Sullivan | Claremont, NH | +1-603372-SSSS |
| Conversent Communications Of New Hampshire | Rockingham | Portsmouth, NH | +1-603373-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Bartlett, NH | +1-603374-SSSS |
| Global Naps | Merrimack | Concord, NH | +1-603375-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Strafford | Dover, NH | +1-603376-SSSS |
| Omnipoint Miami E License | Hillsborough | Merrimack, NH | +1-603377-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Plaistow, NH | +1-603378-SSSS |
| Brooks Fiber Communications Of New Hampshire | Rockingham | Rye, NH | +1-603379-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Portsmouth, NH | +1-603380-SSSS |
| United States Cellular Corp. - New Hampshire | Grafton | W Lebanon, NH | +1-603381-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Plaistow, NH | +1-603382-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Jackson, NH | +1-603383-SSSS |
| Comcast Phone Of New Hampshire | Hillsborough | Manchester, NH | +1-603384-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603385-SSSS |
| Broadview Networks | Hillsborough | Nashua, NH | +1-603386-SSSS |
| Bell Atlantic Nynex Mobile | Belknap | Laconia, NH | +1-603387-SSSS |
| Freedom Ring Communications | Coos | Colebrook, NH | +1-603388-SSSS |
| Choice One Communications Of New Hampshire | Strafford | Durham, NH | +1-603389-SSSS |
| Brooks Fiber Communications Of New Hampshire | Coos | Jefferson, NH | +1-603390-SSSS |
| Teleport Communications Of Boston | Hillsborough | Manchester, NH | +1-603391-SSSS |
| Comcast Phone Of New Hampshire | Winchester, NH | +1-603392-SSSS | |
| United States Cellular Corp. - New Hampshire | Belknap | Laconia, NH | +1-603393-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Seabrook, NH | +1-603394-SSSS |
| Brooks Fiber Communications Of New Hampshire | Rockingham | Exeter, NH | +1-603395-SSSS |
| Nextel Communications | Hillsborough | Merrimack, NH | +1-603396-SSSS |
| Comcast Phone Of New Hampshire | Strafford | Durham, NH | +1-603397-SSSS |
| United States Cellular Corp. - New Hampshire | Grafton | W Lebanon, NH | +1-603398-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Westmoreland, NH | +1-603399-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Hampton, NH | +1-603401-SSSS |
| Conversent Communications Of New Hampshire | Hillsborough | Manchester, NH | +1-603410-SSSS |
| United States Cellular Corp. - New Hampshire | Grafton | Plymouth, NH | +1-603412-SSSS |
| Rnk | Hillsborough | Manchester, NH | +1-603413-SSSS |
| United States Cellular Corp. - New Hampshire | Sullivan | Sunapee, NH | +1-603414-SSSS |
| Freedom Ring Communications | Merrimack | Concord, NH | +1-603415-SSSS |
| Conversent Communications Of New Hampshire | Rockingham | Exeter, NH | +1-603418-SSSS |
| United States Cellular Corp. - New Hampshire | Merrimack | Suncook, NH | +1-603419-SSSS |
| Brooks Fiber Communications Of New Hampshire | Hillsborough | Nashua, NH | +1-603420-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603421-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603422-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Merrimack, NH | +1-603423-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Merrimack, NH | +1-603424-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603425-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603426-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603427-SSSS |
| Merrimack Co. Telephone Co., DBA Contoocook Valley | Merrimack | Henniker, NH | +1-603428-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Merrimack, NH | +1-603429-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603430-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603431-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603432-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603433-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603434-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Merrimack | Pittsfield, NH | +1-603435-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603436-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603437-SSSS |
| Sprint Spectrum L.p. | Hillsborough | Nashua, NH | +1-603438-SSSS |
| Conversent Communications Of New Hampshire | Cheshire | Keene, NH | +1-603439-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Merrimack, NH | +1-603440-SSSS |
| Global Naps | Cheshire | Winchester, NH | +1-603441-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Lebanon, NH | +1-603442-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Lebanon, NH | +1-603443-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Littleton, NH | +1-603444-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | North Walpole, NH | +1-603445-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Marlow, NH | +1-603446-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Conway, NH | +1-603447-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Lebanon, NH | +1-603448-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Coos | Milan, NH | +1-603449-SSSS |
| Global Naps | Coos | Milan, NH | +1-603451-SSSS |
| Freedom Ring Communications | Carroll | Conway, NH | +1-603452-SSSS |
| Global Naps | Grafton | Littleton, NH | +1-603453-SSSS |
| United States Cellular Corp. - New Hampshire | Sullivan | Sunapee, NH | +1-603454-SSSS |
| United States Cellular Corp. - New Hampshire | Belknap | Laconia, NH | +1-603455-SSSS |
| Merrimack County Telephone Co. | Merrimack | Warner, NH | +1-603456-SSSS |
| Global Naps | Rockingham | Portsmouth, NH | +1-603457-SSSS |
| Comcast Phone Of New Hampshire | Rockingham | Salem, NH | +1-603458-SSSS |
| Lightship Telecom | Hillsborough | Nashua, NH | +1-603459-SSSS |
| Brooks Fiber Communications Of New Hampshire | Hillsborough | Manchester, NH | +1-603460-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Merrimack, NH | +1-603461-SSSS |
| Freedom Ring Communications | Rockingham | Deerfield, NH | +1-603462-SSSS |
