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Area Code 720
Colorado area code 720 has been in service since 1998. It has 212 landlines and 124 wireless prefixes (exchanges) serviced by 32 carriers. It covers 8 counties, 321 ZIP codes, and 24 cities, including Denver, Aurora, Littleton, Parker, Englewood, Boulder, Longmont, Castle Rock, and Broomfield.
- State:
- Colorado
- Time Zone:
- Mountain (9:35 am)
Area Code (720) has 336 prefixes
| Prefix | County | City | Company/Carrier | Line Type |
|---|---|---|---|---|
| (720) 200- | Arapahoe | Englewood | Qwest Corporation | Landline |
| (720) 201- | Boulder | Boulder | New Cingular Wireless Pcs, Llc | Cell Phone |
| (720) 203- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 204- | Boulder | Longmont | At&t Local | Landline |
| (720) 205- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 206- | Arapahoe | Englewood | Xo Colorado, Llc | Landline |
| (720) 207- | Arapahoe | Aurora | Xo Colorado, Llc | Landline |
| (720) 208- | Arapahoe | Englewood | Xo Colorado, Llc | Landline |
| (720) 209- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 210- | Boulder | Boulder | Xo Colorado, Llc | Landline |
| (720) 212- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 213- | Arapahoe | Aurora | Mcleodusa Telecommunication... | Landline |
| (720) 214- | Denver | Denver | Mcleodusa Telecommunication... | Landline |
| (720) 216- | Arapahoe | Aurora | Teleport Communications Gro... | Landline |
| (720) 217- | Denver | Denver | T-mobile Usa, Inc. | Cell Phone |
| (720) 218- | Arapahoe | Englewood | Sprint Spectrum L.p. | Cell Phone |
| (720) 219- | Arapahoe | Aurora | Cellco Partnership Dba Veri... | Cell Phone |
| (720) 220- | Denver | Denver | T-mobile Usa, Inc. | Cell Phone |
| (720) 221- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 222- | Arapahoe | Aurora | Xo Colorado, Llc | Landline |
| (720) 223- | Adams | Brighton | Xo Colorado, Llc | Landline |
| (720) 224- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 225- | Douglas | Lone Tree | Xo Colorado, Llc | Landline |
| (720) 226- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 227- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 228- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 229- | Jefferson | Arvada | Xo Colorado, Llc | Landline |
| (720) 231- | Arapahoe | Aurora | T-mobile Usa, Inc. | Cell Phone |
| (720) 232- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 233- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 234- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 235- | Boulder | Boulder | Sprint Spectrum L.p. | Cell Phone |
| (720) 236- | Jefferson | Arvada | Sprint Spectrum L.p. | Cell Phone |
| (720) 238- | Boulder | Louisville | T-mobile Usa, Inc. | Cell Phone |
| (720) 239- | Douglas | Castle Rock | At&t Local | Landline |
| (720) 240- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 241- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 244- | Jefferson | Littleton | New Cingular Wireless Pcs, Llc | Cell Phone |
| (720) 246- | Arapahoe | Aurora | Xo Colorado, Llc | Landline |
| (720) 247- | Jefferson | Littleton | Xo Colorado, Llc | Landline |
| (720) 248- | Arapahoe | Aurora | Cbeyond Communications, Llc... | Landline |
| (720) 249- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 250- | Arapahoe | Aurora | Xo Colorado, Llc | Landline |
| (720) 251- | Arapahoe | Aurora | Level 3 Communications, Llc... | Landline |
| (720) 252- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 253- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 254- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 255- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 256- | Arapahoe | Englewood | Sprint Spectrum L.p. | Cell Phone |
| (720) 257- | Arapahoe | Englewood | Xo Colorado, Llc | Landline |
| (720) 258- | Denver | Denver | Teleport Communications Gro... | Landline |
| (720) 259- | Denver | Denver | Level 3 Communications, Llc... | Landline |
| (720) 260- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 261- | Denver | Denver | T-mobile Usa, Inc. | Cell Phone |
| (720) 262- | Arapahoe | Aurora | Icg Telecom Group - Co | Landline |
| (720) 263- | Adams | Brighton | Level 3 Communications, Llc... | Landline |
| (720) 264- | Denver | Denver | Qwest Corporation | Landline |
| (720) 266- | Arapahoe | Littleton | Level 3 Communications, Llc... | Landline |
| (720) 267- | Arapahoe | Englewood | Qwest Corporation | Landline |
| (720) 269- | Arapahoe | Aurora | Teleport Communications Gro... | Landline |
| (720) 270- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 271- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 272- | Jefferson | Littleton | New Cingular Wireless Pcs, Llc | Cell Phone |
| (720) 273- | Jefferson | Littleton | New Cingular Wireless Pcs, Llc | Cell Phone |
| (720) 274- | Denver | Denver | Mcleodusa Telecommunication... | Landline |
| (720) 275- | Jefferson | Littleton | Leap Wireless Intl, Inc. Db... | Cell Phone |
| (720) 276- | Jefferson | Littleton | Leap Wireless Intl, Inc. Db... | Cell Phone |
| (720) 277- | Arapahoe | Aurora | Icg Telecom Group - Co | Landline |
| (720) 278- | Arapahoe | Aurora | Tw Telecom Of Colorado Llc... | Landline |
| (720) 279- | Douglas | Lone Tree | Tw Telecom Of Colorado Llc... | Landline |
| (720) 280- | Denver | Denver | T-mobile Usa, Inc. | Cell Phone |
| (720) 281- | Arapahoe | Aurora | Cellco Partnership Dba Veri... | Cell Phone |
| (720) 282- | Arapahoe | Aurora | Tw Telecom Of Colorado Llc... | Landline |
| (720) 283- | Arapahoe | Littleton | Qwest Corporation | Landline |
| (720) 284- | Arapahoe | Englewood | Xo Colorado, Llc | Landline |
| (720) 285- | Arapahoe | Englewood | Xo Colorado, Llc | Landline |
| (720) 286- | Arapahoe | Englewood | Teleport Communications Gro... | Landline |
| (720) 289- | Denver | Denver | New Cingular Wireless Pcs, Llc | Cell Phone |
| (720) 290- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 291- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 293- | Denver | Denver | Xo Colorado, Llc | Landline |
| (720) 294- | Douglas | Littleton | Xo Colorado, Llc | Landline |
| (720) 296- | Denver | Denver | Leap Wireless Intl, Inc. Db... | Cell Phone |
| (720) 297- | Jefferson | Littleton | Leap Wireless Intl, Inc. Db... | Cell Phone |
| (720) 298- | Jefferson | Littleton | Leap Wireless Intl, Inc. Db... | Cell Phone |
| (720) 299- | Arapahoe | Englewood | T-mobile Usa, Inc. | Cell Phone |
| (720) 300- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 301- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 302- | Jefferson | Denver | Teleport Communications Gro... | Landline |
| (720) 304- | Boulder | Boulder | Qwest Corporation | Landline |
| (720) 305- | Denver | Denver | Tw Telecom Of Colorado Llc... | Landline |
| (720) 306- | Arapahoe | Aurora | Eschelon Telecom Of Colorad... | Landline |
| (720) 308- | Jefferson | Denver | New Cingular Wireless Pcs, Llc | Cell Phone |
| (720) 309- | Denver | Denver | Leap Wireless Intl, Inc. Db... | Cell Phone |
| (720) 312- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 313- | Boulder | Boulder | Sprint Spectrum L.p. | Cell Phone |
| (720) 314- | Jefferson | Littleton | Sprint Spectrum L.p. | Cell Phone |
| (720) 317- | Arapahoe | Aurora | Sprint Spectrum L.p. | Cell Phone |
| (720) 318- | Denver | Denver | Sprint Spectrum L.p. | Cell Phone |
| (720) 319- | Arapahoe | Aurora | Sprint Spectrum L.p. | Cell Phone |
