Telephone Area 603. Page 3.
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 | Rockingham | Deerfield, NH | +1-603463-SSSS |
| Merrimack Co. Telephone Co., DBA Contoocook Valley | Hillsborough | Hillsboro, NH | +1-603464-SSSS |
| Hollis Telephone Company | Hillsborough | Hollis, NH | +1-603465-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Coos | Gorham, NH | +1-603466-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603467-SSSS |
| Freedom Ring Communications | Rockingham | Seabrook, NH | +1-603468-SSSS |
| Kearsarge Telephone Co. | Grafton | Lebanon, NH | +1-603469-SSSS |
| United States Cellular Corp. - New Hampshire | Merrimack | Concord, NH | +1-603470-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Bedford, NH | +1-603471-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Bedford, NH | +1-603472-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Strafford | Milton Mills, NH | +1-603473-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Seabrook, NH | +1-603474-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Salem, NH | +1-603475-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | South Tamworth, NH | +1-603476-SSSS |
| United States Cellular Corp. - New Hampshire | Sullivan | Claremont, NH | +1-603477-SSSS |
| Granite State Telephone | Hillsborough | Hillsboro, NH | +1-603478-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Derry, NH | +1-603479-SSSS |
| Dsci Corporation | Hillsborough | Manchester, NH | +1-603480-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Manchester, NH | +1-603481-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Coos | Errol, NH | +1-603482-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Candia, NH | +1-603483-SSSS |
| Global Naps | Hillsborough | Nashua, NH | +1-603484-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Merrimack | Suncook, NH | +1-603485-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Manchester, NH | +1-603486-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | New Boston, NH | +1-603487-SSSS |
| Comcast Phone Of New Hampshire | Hillsborough | Manchester, NH | +1-603488-SSSS |
| Comcast Phone Of New Hampshire | Hillsborough | Manchester, NH | +1-603489-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Derry, NH | +1-603490-SSSS |
| Bell Atlantic Nynex Mobile | Merrimack | Concord, NH | +1-603491-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603492-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Merrimack, NH | +1-603493-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Merrimack, NH | +1-603494-SSSS |
| Granite State Telephone | Sullivan | Washington, NH | +1-603495-SSSS |
| Bell Atlantic Nynex Mobile | Merrimack | Concord, NH | +1-603496-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Goffstown, NH | +1-603497-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Portsmouth, NH | +1-603498-SSSS |
| Level 3 Communications | Cheshire | Keene, NH | +1-603499-SSSS |
| Paetec Communications | Rockingham | Portsmouth, NH | +1-603501-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Portsmouth, NH | +1-603502-SSSS |
| Brooks Fiber Communications Of New Hampshire | Coos | Lancaster, NH | +1-603503-SSSS |
| United States Cellular Corp. - New Hampshire | Sullivan | Claremont, NH | +1-603504-SSSS |
| Bell Atlantic Nynex Mobile | Rockingham | Derry, NH | +1-603505-SSSS |
| Global Naps | Grafton | Grafton, NH | +1-603506-SSSS |
| Global Naps | Grafton | Canaan, NH | +1-603507-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Pelham, NH | +1-603508-SSSS |
| Ctc Communications Corp. | Strafford | Dover, NH | +1-603509-SSSS |
| Comcast Phone Of New Hampshire | Meriden, NH | +1-603510-SSSS | |
| Sprint Spectrum L.p. | Hillsborough | Manchester, NH | +1-603512-SSSS |
| Rnk | Merrimack | Concord, NH | +1-603513-SSSS |
| Global Naps | Coos | Lancaster, NH | +1-603514-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Wolfeboro, NH | +1-603515-SSSS |
| Freedom Ring Communications | Strafford | Dover, NH | +1-603516-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Merrimack, NH | +1-603517-SSSS |
| AT&T Local | Hillsborough | Manchester, NH | +1-603518-SSSS |
| Bell Atlantic Nynex Mobile | Belknap | Laconia, NH | +1-603520-SSSS |
| AT&T Local | Hillsborough | Nashua, NH | +1-603521-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Sanbornville, NH | +1-603522-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Canaan, NH | +1-603523-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Belknap | Laconia, NH | +1-603524-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Hancock, NH | +1-603525-SSSS |
| Kearsarge Telephone Co. | Merrimack | New London, NH | +1-603526-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Belknap | Laconia, NH | +1-603527-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Belknap | Laconia, NH | +1-603528-SSSS |
| Granite State Telephone | Hillsborough | Weare, NH | +1-603529-SSSS |
| Rural Cellular Corporation | Grafton | Bristol, NH | +1-603530-SSSS |
| New Cingular Wireless PCS - DC | Rockingham | Portsmouth, NH | +1-603531-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Cheshire | Jaffrey, NH | +1-603532-SSSS |
| United States Cellular Corp. - New Hampshire | Hillsborough | Merrimack, NH | +1-603533-SSSS |
| Bell Atlantic Nynex Mobile | Strafford | Dover, NH | +1-603534-SSSS |
| Paetec Communications | Grafton | Plymouth, NH | +1-603535-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Grafton | Plymouth, NH | +1-603536-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Rockingham | Derry, NH | +1-603537-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Coos | Pittsburg, NH | +1-603538-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Carroll | Ctr Ossipee, NH | +1-603539-SSSS |
| Bell Atlantic Nynex Mobile | Hillsborough | Goffstown, NH | +1-603540-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Hillsborough | Manchester, NH | +1-603541-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Sullivan | Claremont, NH | +1-603542-SSSS |
| No New England Tel Op DBA Fairpoint Comm | Sullivan | Claremont, NH | +1-603543-SSSS |
| Merrimack Co. Telephone Co., DBA Contoocook Valley | Carroll | Center Tuftonboro, NH | +1-603544-SSSS |
| Lightship Telecom | Merrimack | Concord, NH | +1-603545-SSSS |
