Telephone Area 603. Page 8.
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 |
|---|---|---|---|
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603886-SSSS |
| Granite State Telephone | Rockingham | Chester, NH | +1-603887-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603888-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603889-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Salem, NH | +1-603890-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603891-SSSS |
| Omnipoint Miami E License | Merrimack | Concord, NH | +1-603892-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Salem, NH | +1-603893-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Salem, NH | +1-603894-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Raymond, NH | +1-603895-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Salem, NH | +1-603896-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Nashua, NH | +1-603897-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Salem, NH | +1-603898-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Rindge, NH | +1-603899-SSSS |
| Comcast Phone Of New Hampshire | Newbury, NH | +1-603902-SSSS | |
| Crc Communications Of Maine | Cheshire | Keene, NH | +1-603903-SSSS |
| Otel Telekom | Cheshire | Walpole, NH | +1-603904-SSSS |
| Otel Telekom | Barrington, NH | +1-603905-SSSS | |
| Idt America Corp | Rochester, NH | +1-603906-SSSS | |
| Global Naps | Rockingham | Hampstead, NH | +1-603907-SSSS |
| Global Naps | Cheshire | Alstead, NH | +1-603908-SSSS |
| Global Naps | Sullivan | Charlestown, NH | +1-603909-SSSS |
| Conversent Communications Of New Hampshire | Rockingham | Hampton, NH | +1-603910-SSSS |
| Rnk | Rockingham | Salem, NH | +1-603912-SSSS |
| Paetec Communications | Hillsborough | Manchester, NH | +1-603913-SSSS |
| +1-603914-SSSS | |||
| Bell Atlantic Nynex Mobile | Coos | Gorham, NH | +1-603915-SSSS |
| Global Naps | Cheshire | Keene, NH | +1-603917-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Hampton, NH | +1-603918-SSSS |
| +1-603920-SSSS | |||
| Bell Atlantic Nynex Mobile | Nashua, NH | +1-603921-SSSS | |
| No New England Tel Op DBA Fairpoint Comm | Coos | North Stratford, NH | +1-603922-SSSS |
| Level 3 Communications | Strafford | Rochester, NH | +1-603923-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Peterborough, NH | +1-603924-SSSS |
| Freedom Ring Communications | Hillsborough | Peterborough, NH | +1-603925-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Hampton, NH | +1-603926-SSSS |
| Merrimack County Telephone Co. | Merrimack | Newbury, NH | +1-603927-SSSS |
| Freedom Ring Communications | Merrimack | Suncook, NH | +1-603928-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Hampton, NH | +1-603929-SSSS |
| New Cingular Wireless PCS - DC | Hillsborough | Nashua, NH | +1-603930-SSSS |
| Securesyscom | Manchester, NH | +1-603932-SSSS | |
| Bell Atlantic Nynex Mobile | Greenfield, NH | +1-603933-SSSS | |
| No New England Tel Op DBA Fairpoint Comm | Merrimack | Franklin, NH | +1-603934-SSSS |
| Dsci Corporation | Manchester, NH | +1-603935-SSSS | |
| Bell Atlantic Nynex Mobile | Meredith, NH | +1-603937-SSSS | |
| Merrimack County Telephone Co. | Merrimack | Warner, NH | +1-603938-SSSS |
| Northland Telephone Of Maine | Carroll | Center Conway, NH | +1-603939-SSSS |
| +1-603940-SSSS | |||
| Brooks Fiber Communications Of New Hampshire | Carroll | Wolfeboro, NH | +1-603941-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Northwood, NH | +1-603942-SSSS |
| Omnipoint Miami E License | Hillsborough | Nashua, NH | +1-603943-SSSS |
| Nextel Communications | Rockingham | East Kingston, NH | +1-603944-SSSS |
| Neutral Tandem-new Hampshire | Manchester, NH | +1-603945-SSSS | |
| Freedom Ring Communications | Grafton | Plymouth, NH | +1-603947-SSSS |
| Idt America Corp | Rochester, NH | +1-603948-SSSS | |
| Global Naps | Merrimack | Pittsfield, NH | +1-603949-SSSS |
| Level 3 Communications | Coos | Milan, NH | +1-603951-SSSS |
| Level 3 Communications | Rockingham | Salem, NH | +1-603952-SSSS |
| Choice One Communications Of New Hampshire | Strafford | Dover, NH | +1-603953-SSSS |
| Global Naps | Carroll | North Sandwich, NH | +1-603954-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Portsmouth, NH | +1-603957-SSSS |
| Bell Atlantic Nynex Mobile | Campton, NH | +1-603960-SSSS | |
| Comcast Phone Of New Hampshire | Chichester, NH | +1-603961-SSSS | |
| Global Naps | Grafton | N Woodstock, NH | +1-603962-SSSS |
| Global Naps | Coos | Colebrook, NH | +1-603963-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Rye, NH | +1-603964-SSSS |
| Choice One Communications Of New Hampshire | Rockingham | Derry, NH | +1-603965-SSSS |
| Nextel Communications | Hillsborough | Nashua, NH | +1-603966-SSSS |
| Level 3 Communications | Rockingham | Hampton, NH | +1-603967-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Ashland, NH | +1-603968-SSSS |
| Sprint Spectrum L.p. | Rockingham | Portsmouth, NH | +1-603969-SSSS |
| New Cingular Wireless PCS - DC | Dover, NH | +1-603970-SSSS | |
| Freedom Ring Communications | Cheshire | Rindge, NH | +1-603971-SSSS |
| Sprint Spectrum L.p. | Strafford | Rochester, NH | +1-603973-SSSS |
| Comcast Phone Of New Hampshire | Rockingham | Plaistow, NH | +1-603974-SSSS |
| Comcast Phone Of New Hampshire | Boscawen, NH | +1-603975-SSSS | |
| Comcast Phone Of New Hampshire | Andover, NH | +1-603977-SSSS | |
| New Cingular Wireless PCS - DC | Strafford | Dover, NH | +1-603978-SSSS |
| Bell Atlantic Nynex Mobile | Carroll | North Conway, NH | +1-603986-SSSS |
| Sprint Spectrum L.p. | Rockingham | Portsmouth, NH | +1-603988-SSSS |
