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Area Code 603
New Hampshire area code 603 has been in service since 1947. It has 588 landlines and 68 wireless prefixes (exchanges) serviced by 45 carriers. It covers 15 counties, 704 ZIP codes, and 231 cities, including Manchester, Nashua, Concord, Derry, Salem, Portsmouth, Dover, Rochester, and Merrimack.
- State:
- New Hampshire
- Time Zone:
- Eastern (5:07 pm)
Area Code (603) has 656 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (603) 203- | Hillsborough | Bedford | New Cingular Wireless Pcs,... | Cell Phone |
| (603) 204- | Santa Clara | Cupertino | United States Cellular Corp... | Landline |
| (603) 205- | Rockingham | Portsmouth | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 206- | Hillsborough | Manchester | Paetec Communications, Inc.... | Landline |
| (603) 207- | Suffolk | Patchogue | Unknown | Landline |
| (603) 208- | Grafton | Orford | United States Cellular Corp... | Landline |
| (603) 209- | Cheshire | Keene | United States Cellular Corp... | Landline |
| (603) 210- | Merrimack | Suncook | Comcast Phone Of New Hampsh... | Landline |
| (603) 212- | Rockingham | Salem | No New England Tel Op Dba F... | Landline |
| (603) 215- | Coos | Berlin | Freedom Ring Communications... | Landline |
| (603) 216- | Rockingham | Derry | Comcast Phone Of New Hampsh... | Landline |
| (603) 217- | Grafton | Bristol | Rnk, Inc. | Landline |
| (603) 218- | Hillsborough | Bedford | Broadview Networks, Inc. - Nh | Landline |
| (603) 219- | Merrimack | Concord | Sprint Spectrum L.p. | Cell Phone |
| (603) 221- | Rockingham | Salem | No New England Tel Op Dba F... | Landline |
| (603) 222- | Hillsborough | Manchester | No New England Tel Op Dba F... | Landline |
| (603) 223- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 224- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 225- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 226- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 227- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 228- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 229- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 230- | Merrimack | Bow | No New England Tel Op Dba F... | 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 | No New England Tel Op Dba F... | Landline |
| (603) 237- | Coos | Colebrook | No New England Tel Op Dba F... | Landline |
| (603) 238- | Grafton | Plymouth | Paetec Communications, Inc.... | Landline |
| (603) 239- | Cheshire | Winchester | No New England Tel Op Dba F... | Landline |
| (603) 240- | Rockingham | Hampton | No New England Tel Op Dba F... | Landline |
| (603) 241- | Hillsborough | Manchester | No New England Tel Op Dba F... | Landline |
| (603) 242- | Cheshire | Troy | No New England Tel Op Dba F... | Landline |
| (603) 244- | Rockingham | Raymond | Comcast Phone Of New Hampsh... | Landline |
| (603) 245- | Rockingham | Portsmouth | No New England Tel Op Dba F... | Landline |
| (603) 246- | Coos | Colebrook | No New England Tel Op Dba F... | Landline |
| (603) 247- | Rockingham | Exeter | New Cingular Wireless Pcs,... | Cell Phone |
| (603) 248- | Rockingham | Hampton | No New England Tel Op Dba F... | Landline |
| (603) 249- | Hillsborough | Milford | No New England Tel Op Dba F... | Landline |
| (603) 250- | Belknap | Center Harbor | Freedom Ring Communications... | Landline |
| (603) 251- | Hillsborough | Nashua | Global Naps, Inc. - Nh | Landline |
| (603) 252- | Windsor | White River Junction | United States Cellular Corp... | Landline |
| (603) 253- | Carroll | Moultonborough | No New England Tel Op Dba F... | Landline |
| (603) 254- | Grafton | Bristol | United States Cellular Corp... | Landline |
| (603) 255- | Coos | Colebrook | Dixville Telephone Co. | Landline |
| (603) 256- | Cheshire | Hinsdale | No New England Tel Op Dba F... | Landline |
| (603) 257- | Cheshire | Winchester | 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 | Manchester | United States Cellular Corp... | Landline |
| (603) 262- | Hillsborough | Merrimack | No New England Tel Op Dba F... | 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 | Tilton | No New England Tel Op Dba F... | Landline |
| (603) 267- | Belknap | Belmont | No New England Tel Op Dba F... | Landline |
| (603) 268- | Merrimack | Hooksett | No New England Tel Op Dba F... | Landline |
| (603) 269- | Belknap | Center Barnstead | Union Telephone Co. - Nh | Cell Phone |
| (603) 270- | Hillsborough | Nashua | Brooks Fiber Communications... | Landline |
| (603) 271- | Merrimack | Concord | No New England Tel Op Dba F... | Landline |
| (603) 272- | Grafton | Piermont | No New England Tel Op Dba F... | Landline |
| (603) 273- | Belknap | Laconia | Brooks Fiber Communications... | Landline |
| (603) 274- | Strafford | Dover | Brooks Fiber Communications... | Landline |
| (603) 275- | Hillsborough | Nashua | Omnipoint Miami E License, Llc | Cell Phone |
| (603) 276- | Grafton | West Lebanon | Bell Atlantic Nynex Mobile | Landline |
| (603) 277- | Grafton | Hanover | Comcast Phone Of New Hampsh... | Landline |
| (603) 278- | Coos | Bretton Woods | Bretton Woods Telephone Co. | Landline |
| (603) 279- | Belknap | Meredith | No New England Tel Op Dba F... | Landline |
| (603) 280- | Strafford | Barrington | Level 3 Communications - Nh | Landline |
| (603) 281- | Hillsborough | Nashua | No New England Tel Op Dba F... | Landline |
| (603) 283- | Cheshire | Keene | Paetec Communications, Inc.... | Landline |
| (603) 284- | Carroll | Center Sandwich | No New England Tel Op Dba F... | Landline |
| (603) 285- | Strafford | Dover | Brooks Fiber Communications... | Landline |
| (603) 286- | Belknap | Tilton | No New England Tel Op Dba F... | 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 | No New England Tel Op Dba F... | Landline |
| (603) 294- | Rockingham | Portsmouth | Level 3 Communications - Nh | Landline |
| (603) 295- | Grafton | West Lebanon | Paetec Communications, Inc.... | Landline |
| (603) 296- | Hillsborough | Manchester | Choice One Communications O... | Landline |
| (603) 298- | Grafton | West Lebanon | No New England Tel Op Dba F... | Landline |
| (603) 299- | Hillsborough | Bedford | Global Naps, Inc. - Nh | Landline |
| (603) 300- | Hillsborough | Manchester | Nextel Communications, Inc. | Cell Phone |
| (603) 301- | Carroll | Freedom | 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... | Landline |
| (603) 307- | Strafford | Lee | Global Naps, Inc. - Nh | Landline |
| (603) 309- | Hillsborough | Pelham | Global Naps, Inc. - Nh | Landline |
| (603) 310- | Hillsborough | Bedford | Ctc Communications Corp. - Nh | Landline |
| (603) 312- | Rockingham | Portsmouth | Bell Atlantic Nynex Mobile | Landline |
| (603) 313- | Cheshire | Keene | United States Cellular Corp... | Landline |
| (603) 314- | Hillsborough | Manchester | Lightship Telecom, Llc - Nh | Landline |
| (603) 315- | Hillsborough | Manchester | Bell Atlantic Nynex Mobile | Landline |
