Telephone Area 603. Page 4.
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 |
|---|---|---|---|
| Choice One Communications Of New Hampshire | Hillsborough | Nashua, NH | +1-603546-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Greenfield, NH | +1-603547-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Derry, NH | +1-603548-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603549-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603551-SSSS |
| Brooks Fiber Communications Of New Hampshire | Hillsborough | Manchester, NH | +1-603552-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Derry, NH | +1-603553-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Milford, NH | +1-603554-SSSS |
| Level 3 Communications | Belknap | Laconia, NH | +1-603556-SSSS |
| Sprint Spectrum L.p. | Hillsborough | Nashua, NH | +1-603557-SSSS |
| Bell Atlantic Nynex Mobile | Sullivan | Claremont, NH | +1-603558-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Portsmouth, NH | +1-603559-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Salem, NH | +1-603560-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603561-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Peterborough, NH | +1-603562-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Harrisville, NH | +1-603563-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603564-SSSS |
| Level 3 Communications | Merrimack | Penacook, NH | +1-603565-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Nashua, NH | +1-603566-SSSS |
| Level 3 Communications | Hillsborough | Peterborough, NH | +1-603567-SSSS |
| Bell Atlantic Nynex Mobile | Merrimack | Concord, NH | +1-603568-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Wolfeboro, NH | +1-603569-SSSS |
| Brooks Fiber Communications Of New Hampshire | Rockingham | Portsmouth, NH | +1-603570-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Derry, NH | +1-603571-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603572-SSSS |
| Brooks Fiber Communications Of New Hampshire | Hillsborough | Manchester, NH | +1-603573-SSSS |
| Level 3 Communications | Cheshire | Alstead, NH | +1-603574-SSSS |
| Brooks Fiber Communications Of New Hampshire | Grafton | Littleton, NH | +1-603575-SSSS |
| Level 3 Communications | Grafton | Lyme, NH | +1-603576-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603577-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603578-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603579-SSSS |
| Comcast Phone Of New Hampshire | Rockingham | Exeter, NH | +1-603580-SSSS |
| Choice One Communications Of New Hampshire | Belknap | Laconia, NH | +1-603581-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Merrimack, NH | +1-603582-SSSS |
| Level 3 Communications | Rockingham | Exeter, NH | +1-603583-SSSS |
| Global Naps | Hillsborough | Manchester, NH | +1-603584-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Fitzwilliam, NH | +1-603585-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Coos | Jefferson, NH | +1-603586-SSSS |
| Brooks Fiber Communications Of New Hampshire | Hillsborough | Manchester, NH | +1-603587-SSSS |
| Merrimack Co. Telephone Co., DBA Contoocook Valley | Hillsborough | Antrim, NH | +1-603588-SSSS |
| Paetec Communications | Hillsborough | Nashua, NH | +1-603589-SSSS |
| Freedom Ring Communications | Strafford | Durham, NH | +1-603590-SSSS |
| Sprint Spectrum L.p. | Hillsborough | Manchester, NH | +1-603591-SSSS |
| Brooks Fiber Communications Of New Hampshire | Cheshire | Chesterfield, NH | +1-603592-SSSS |
| Ctc Communications Corp. | Cheshire | Jaffrey, NH | +1-603593-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603594-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603595-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603596-SSSS |
| Brooks Fiber Communications Of New Hampshire | Grafton | Lyme, NH | +1-603597-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603598-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603599-SSSS |
| Paetec Communications | Rockingham | Hampton, NH | +1-603601-SSSS |
| Conversent Communications Of New Hampshire | Hillsborough | Manchester, NH | +1-603606-SSSS |
| Nextel Communications | Rockingham | Northwood, NH | +1-603608-SSSS |
| Rnk | Strafford | Dover, NH | +1-603609-SSSS |
| Choice One Communications Of New Hampshire | Rockingham | Portsmouth, NH | +1-603610-SSSS |
| Conversent Communications Of New Hampshire | Rockingham | Plaistow, NH | +1-603612-SSSS |
| Brooks Fiber Communications Of New Hampshire | Coos | Colebrook, NH | +1-603613-SSSS |
| Level 3 Communications | Cheshire | West Chesterfield, NH | +1-603614-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603615-SSSS |
| United States Cellular Corp. - New Hampshire | Grafton | Littleton, NH | +1-603616-SSSS |
| Choice One Communications Of New Hampshire | Strafford | Dover, NH | +1-603617-SSSS |
| Level 3 Communications | Grafton | Woodsville, NH | +1-603618-SSSS |
| Global Naps | Grafton | Hanover, NH | +1-603619-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Merrimack, NH | +1-603620-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603621-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603622-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603623-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603624-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603625-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603626-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603627-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603628-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603629-SSSS |
| Bell Atlantic Nynex Mobile | Belknap | Laconia, NH | +1-603630-SSSS |
| United States Cellular Corp. - New Hampshire | Coos | Lancaster, NH | +1-603631-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Enfield, NH | +1-603632-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603633-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603634-SSSS |
