Telephone Area 603. Page 7.
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 |
|---|---|---|---|
| Sprint Spectrum L.p. | Hillsborough | Manchester, NH | +1-603799-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Milford, NH | +1-603801-SSSS |
| Global Naps | Hillsborough | Milford, NH | +1-603804-SSSS |
| Global Naps | Rockingham | East Kingston, NH | +1-603805-SSSS |
| Global Naps | Rockingham | Deerfield, NH | +1-603806-SSSS |
| Global Naps | Grafton | Lisbon, NH | +1-603807-SSSS |
| Comcast Phone Of New Hampshire | Antrim, NH | +1-603808-SSSS | |
| Bell Atlantic Nynex Mobile | Nashua, NH | +1-603809-SSSS | |
| +1-603810-SSSS | |||
| Rnk | Rockingham | Portsmouth, NH | +1-603812-SSSS |
| Idt America Corp | Ctr Barnstead, NH | +1-603813-SSSS | |
| Comcast Phone Of New Hampshire | Seabrook, NH | +1-603814-SSSS | |
| Teleport Communications Of Boston | Durham, NH | +1-603815-SSSS | |
| Freedom Ring Communications | Hillsborough | Nashua, NH | +1-603816-SSSS |
| Nextel Communications | Strafford | Dover, NH | +1-603817-SSSS |
| Sprint Spectrum L.p. | Rockingham | Derry, NH | +1-603818-SSSS |
| Level 3 Communications | Rockingham | Plaistow, NH | +1-603819-SSSS |
| Metro PCS | Merrimack, NH | +1-603820-SSSS | |
| Conversent Communications Of New Hampshire | Hillsborough | Nashua, NH | +1-603821-SSSS |
| Choice One Communications Of New Hampshire | Strafford | Rochester, NH | +1-603822-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Franconia, NH | +1-603823-SSSS |
| Brooks Fiber Communications Of New Hampshire | Hillsborough | Nashua, NH | +1-603824-SSSS |
| Global Naps | Belknap | Laconia, NH | +1-603825-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Sullivan | Charlestown, NH | +1-603826-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Harrisville, NH | +1-603827-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Portsmouth, NH | +1-603828-SSSS |
| Brooks Fiber Communications Of New Hampshire | Sullivan | Sunapee, NH | +1-603829-SSSS |
| Mainepcs LLC | Wolfeboro, NH | +1-603830-SSSS | |
| Bell Atlantic Nynex Mobile | Hillsborough | Greenfield, NH | +1-603831-SSSS |
| Lightship Telecom | Belknap | Laconia, NH | +1-603832-SSSS |
| Bell Atlantic Nynex Mobile | Strafford | Rochester, NH | +1-603833-SSSS |
| Conversent Communications Of New Hampshire | Strafford | Dover, NH | +1-603834-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Alstead, NH | +1-603835-SSSS |
| Level 3 Communications | Hillsborough | Manchester, NH | +1-603836-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Coos | Whitefield, NH | +1-603837-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Lisbon, NH | +1-603838-SSSS |
| Crc Communications Of Maine | Farmington, NH | +1-603839-SSSS | |
| Comcast Phone Of New Hampshire | Epsom, NH | +1-603840-SSSS | |
| Comcast Phone Of New Hampshire | Strafford | Somersworth, NH | +1-603841-SSSS |
| Paetec Communications | Strafford | Dover, NH | +1-603842-SSSS |
| Freedom Ring Communications | Sullivan | Newport, NH | +1-603843-SSSS |
| Lightship Telecom | Rockingham | Derry, NH | +1-603845-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Bethlehem, NH | +1-603846-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Sullivan, NH | +1-603847-SSSS |
| United States Cellular Corp. - New Hampshire | Merrimack | Concord, NH | +1-603848-SSSS |
| Global Naps | Rockingham | Exeter, NH | +1-603849-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Manchester, NH | +1-603851-SSSS |
| Omnipoint Miami E License | Cheshire | Keene, NH | +1-603852-SSSS |
| Freedom Ring Communications | Grafton | Woodsville, NH | +1-603853-SSSS |
| New Cingular Wireless PCS - DC | Hillsborough | Manchester, NH | +1-603854-SSSS |
| Idt America Corp | Alton, NH | +1-603855-SSSS | |
| Choice One Communications Of New Hampshire | Merrimack | Concord, NH | +1-603856-SSSS |
| Omnipoint Miami E License | Hillsborough | Manchester, NH | +1-603858-SSSS |
| Union Telephone Co. | Strafford | New Durham, NH | +1-603859-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Manchester, NH | +1-603860-SSSS |
| Brooks Fiber Communications Of New Hampshire | Carroll | Tamworth, NH | +1-603861-SSSS |
| Paetec Communications | Strafford | Durham, NH | +1-603862-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Sullivan | Newport, NH | +1-603863-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603864-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Sullivan | Newport, NH | +1-603865-SSSS |
| Omnipoint Miami E License | Strafford | Dover, NH | +1-603866-SSSS |
| New Cingular Wireless PCS - DC | Hillsborough | Manchester, NH | +1-603867-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Strafford | Durham, NH | +1-603868-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Bethlehem, NH | +1-603869-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Salem, NH | +1-603870-SSSS |
| Level 3 Communications | Carroll | Sanbornville, NH | +1-603871-SSSS |
| Idt America Corp | Gilmanton Iron Works, NH | +1-603872-SSSS | |
| Level 3 Communications | Sullivan | Sunapee, NH | +1-603873-SSSS |
| Level 3 Communications | Grafton | Lisbon, NH | +1-603874-SSSS |
| Union Telephone Co. | Belknap | Alton, NH | +1-603875-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Marlborough, NH | +1-603876-SSSS |
| Comcast Phone Of New Hampshire | New London, NH | +1-603877-SSSS | |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Greenville, NH | +1-603878-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603879-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603880-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603881-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603882-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603883-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603884-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603885-SSSS |
