Area Code 603
New Hampshire area code 603 has been in service since 1947. It has 548 landlines and 108 wireless prefixes (exchanges) serviced by 41 carriers. It covers 15 counties, 706 ZIP codes, and 266 cities, including Manchester, Nashua, Concord, Derry, Salem, Dover, Portsmouth, Rochester, and Merrimack.
- State:
- New Hampshire
- Time Zone:
- Eastern (1:55 am)
Area Code (603) has 656 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (603) 203- | Worcester | Winchendon | New Cingular Wireless Pcs, ... | Cell Phone |
| (603) 204- | Santa Clara | Cupertino | United States Cellular Corp... | Cell Phone |
| (603) 205- | Rockingham | Newington | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 206- | Hillsborough | Manchester | Paetec Communications, Inc.... | Landline |
| (603) 207- | Dupage | Hinsdale | Unknown | Landline |
| (603) 208- | Grafton | Lebanon | United States Cellular Corp... | Cell Phone |
| (603) 209- | Cheshire | Keene | United States Cellular Corp... | Cell Phone |
| (603) 210- | Merrimack | Allenstown | Comcast Phone Of New Hampsh... | Landline |
| (603) 212- | Rockingham | Salem | Verizon New England Inc. | Landline |
| (603) 215- | Coos | Berlin | Freedom Ring Communications... | Landline |
| (603) 216- | Rockingham | Derry | Comcast Phone Of New Hampsh... | Landline |
| (603) 217- | Grafton | Alexandria | Rnk, Inc. | Landline |
| (603) 218- | Hillsborough | Bedford | Broadview Networks, Inc. - Nh | Landline |
| (603) 219- | Merrimack | Concord | Sprint Spectrum L.p. - Nh | Cell Phone |
| (603) 221- | Coos | Colebrook | Verizon New England Inc. | Landline |
| (603) 222- | Hillsborough | Manchester | Verizon New England Inc. | Landline |
| (603) 223- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 224- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 225- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 226- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 227- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 228- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 229- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 230- | Merrimack | Bow | Verizon New England Inc. | Landline |
| (603) 231- | Hillsborough | Manchester | Nextel Communications, Inc. | Cell Phone |
| (603) 232- | Hillsborough | Manchester | Comcast Phone Of New Hampsh... | Landline |
| (603) 233- | Hillsborough | Nashua | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 234- | Hillsborough | Nashua | Nextel Communications, Inc. | Cell Phone |
| (603) 235- | Hillsborough | Manchester | Nextel Communications, Inc. | Cell Phone |
| (603) 236- | Grafton | Waterville Valley | Verizon New England Inc. | Landline |
| (603) 237- | Coos | Colebrook | Verizon New England Inc. | Landline |
| (603) 238- | Grafton | Bridgewater | Paetec Communications, Inc.... | Landline |
| (603) 239- | Cheshire | Richmond | Verizon New England Inc. | Landline |
| (603) 240- | Rockingham | Hampton | Verizon New England Inc. | Landline |
| (603) 241- | Hillsborough | Manchester | Verizon New England Inc. | Landline |
| (603) 242- | Cheshire | Troy | Verizon New England Inc. | Landline |
| (603) 244- | Rockingham | Raymond | Comcast Phone Of New Hampsh... | Landline |
| (603) 245- | Rockingham | Newington | Verizon New England Inc. | Landline |
| (603) 246- | Coos | Colebrook | Verizon New England Inc. | Landline |
| (603) 247- | Rockingham | Brentwood | New Cingular Wireless Pcs, ... | Cell Phone |
| (603) 248- | Cheshire | Keene | Verizon New England Inc. | Landline |
| (603) 249- | Hillsborough | Milford | Verizon New England Inc. | Landline |
| (603) 250- | Belknap | Center Harbor | Freedom Ring Communications... | Landline |
| (603) 251- | Carroll | Chocorua | Global Naps, Inc. - Nh | Landline |
| (603) 252- | Grafton | Lebanon | United States Cellular Corp... | Cell Phone |
| (603) 253- | Carroll | Moultonborough | Verizon New England Inc. | Landline |
| (603) 254- | Grafton | Alexandria | United States Cellular Corp... | Cell Phone |
| (603) 255- | Coos | Colebrook | Dixville Telephone Co. | Landline |
| (603) 256- | Cheshire | Hinsdale | Verizon New England Inc. | Landline |
| (603) 257- | Cheshire | Chesterfield | Freedom Ring Communications... | Landline |
| (603) 258- | Maricopa | Phoenix | Global Naps, Inc. - Nh | Landline |
| (603) 259- | Grafton | Littleton | Level 3 Communications - Nh | Landline |
| (603) 261- | Hillsborough | Goffstown | United States Cellular Corp... | Cell Phone |
| (603) 262- | Hillsborough | Merrimack | Verizon New England Inc. | Landline |
| (603) 263- | Hillsborough | Manchester | Brooks Fiber Communications... | Landline |
| (603) 264- | Hillsborough | Manchester | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 265- | Hillsborough | Hudson | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 266- | Belknap | Northfield | Verizon New England Inc. | Landline |
| (603) 267- | Belknap | Belmont | Verizon New England Inc. | Landline |
| (603) 268- | Merrimack | Hooksett | Verizon New England Inc. | Landline |
| (603) 269- | Belknap | Center Barnstead | Union Telephone Co. - Nh | Cell Phone |
| (603) 270- | Hillsborough | Hollis | Brooks Fiber Communications... | Landline |
| (603) 271- | Merrimack | Concord | Verizon New England Inc. | Landline |
| (603) 272- | Grafton | Piermont | Verizon New England Inc. | Landline |
| (603) 273- | Belknap | Laconia | Brooks Fiber Communications... | Landline |
| (603) 274- | Hillsborough | Manchester | Brooks Fiber Communications... | Landline |
| (603) 275- | Howard | Columbia | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 276- | Grafton | West Lebanon | Rural Cellular Corporation | Cell Phone |
| (603) 277- | Grafton | Hanover | Time Warner Cable Informati... | Landline |
| (603) 278- | Coos | Bretton Woods | Bretton Woods Telephone Co. | Landline |
| (603) 279- | Belknap | Meredith | Verizon New England Inc. | Landline |
| (603) 280- | Strafford | Barrington | Level 3 Communications - Nh | Landline |
| (603) 281- | Hillsborough | Nashua | Verizon New England Inc. | Landline |
| (603) 283- | Cheshire | Keene | Paetec Communications, Inc.... | Landline |
| (603) 284- | Carroll | Center Sandwich | Verizon New England Inc. | Landline |
| (603) 285- | Strafford | Dover | Brooks Fiber Communications... | Landline |
| (603) 286- | Belknap | Northfield | Verizon New England Inc. | Landline |
| (603) 287- | Hillsborough | Manchester | Level 3 Communications - Nh | Landline |
| (603) 288- | Merrimack | Hooksett | Global Naps, Inc. - Nh | Landline |
| (603) 289- | Hillsborough | Manchester | New Cingular Wireless Pcs, ... | Cell Phone |
| (603) 291- | Hillsborough | New Ipswich | Comcast Phone Of New Hampsh... | Landline |
| (603) 292- | Rockingham | Newmarket | Comcast Phone Of New Hampsh... | Landline |
| (603) 293- | Belknap | Gilford | Verizon New England Inc. | Landline |
| (603) 294- | Rockingham | Newington | Level 3 Communications - Nh | Landline |
| (603) 295- | Grafton | West Lebanon | Paetec Communications, Inc.... | Landline |
| (603) 296- | Hillsborough | Manchester | Choice One Of New Hampshire... | Landline |
| (603) 298- | Grafton | West Lebanon | Verizon New England Inc. | Landline |
| (603) 299- | Belknap | Meredith | Global Naps, Inc. - Nh | Landline |
| (603) 300- | Hillsborough | Manchester | Nextel Communications, Inc. | Cell Phone |
| (603) 301- | Carroll | Center Ossipee | Rnk, Inc. | Landline |
| (603) 303- | Hillsborough | Manchester | Bell Atlantic Nynex Mobile | Landline |
| (603) 305- | Hillsborough | Nashua | Bell Atlantic Nynex Mobile | Landline |
| (603) 306- | Hillsborough | Wilton | National Mobile Communicati... | Cell Phone |
| (603) 307- | Dupage | Glendale Heights | Global Naps, Inc. - Nh | Landline |
| (603) 309- | Hillsborough | Pelham | Global Naps, Inc. - Nh | Landline |
| (603) 310- | Hillsborough | Bedford | Ctc Communications - Nh | Landline |
| (603) 312- | Rockingham | Brentwood | Rural Cellular Corporation | Cell Phone |
| (603) 313- | Cheshire | Keene | United States Cellular Corp... | Cell Phone |
| (603) 314- | Hillsborough | Manchester | Lightship Telecom, Llc - Nh | Landline |
| (603) 315- | Hillsborough | Manchester | Bell Atlantic Nynex Mobile | Landline |
