The 720 Area Code (or Area Code 720) is located in the state of CO. Area Code 720 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.11 million unique phone numbers and 2.33 million individuals near the city of Denver
Area code 720 was put into service. Area code 720 is an overlay of area code 303.
Aurora, Brighton, Deer Trail, Denver, Englewood, Fort Lupton, Golden, Henderson, Hudson, Idaho Springs, Keenesburg, Littleton, Longmont, Lyons, Sedalia.
| PREFIX | COUNTY | CITY | CARRIER | TYPE |
|---|---|---|---|---|
| 720-271 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-272 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-273 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-274 | Denver | Denver | Mcleodusa Telecommunications Services, Inc.- CO | Landline |
| 720-275 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-276 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-277 | Adams | Aurora | Level 3 Communications, Llc - CO | Landline |
| 720-278 | Adams | Aurora | Level 3 Telecom Of Colorado, Llc - CO | Landline |
| 720-279 | Denver | Denver | Level 3 Telecom Of Colorado, Llc - CO | Landline |
| 720-280 | Denver | Denver | T-Mobile Usa, Inc. | Wireless |
| 720-281 | Adams | Aurora | Cellco Partnership Dba Verizon Wireless - CO | Wireless |
| 720-282 | Denver | Denver | Level 3 Telecom Of Colorado, Llc - CO | Landline |
| 720-283 | Denver | Denver | Qwest Corporation | Landline |
| 720-284 | Denver | Denver | Xo Colorado, Llc | Landline |
| 720-285 | Arapahoe | Englewood | Xo Colorado, Llc | Landline |
| 720-286 | Denver | Denver | Teleport Communications America, Llc - CO | Landline |
| 720-287 | Denver | Denver | Comcast Phone Of Colorado, Llc - CO | Landline |
| 720-288 | Adams | Aurora | Bandwidth.com Clec, Llc - CO | Landline |
| 720-289 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-290 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-291 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-292 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-293 | Denver | Denver | Xo Colorado, Llc | Landline |
| 720-294 | Denver | Denver | Xo Colorado, Llc | Landline |
| 720-295 | Denver | Denver | Bandwidth.com Clec, Llc - CO | Landline |
| 720-296 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-297 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-298 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-299 | Denver | Denver | T-Mobile Usa, Inc. | Wireless |
| 720-300 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-301 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-302 | Denver | Denver | Teleport Communications America, Llc - CO | Landline |
| 720-304 | Denver | Denver | Qwest Corporation | Landline |
| 720-305 | Denver | Denver | Level 3 Telecom Of Colorado, Llc - CO | Landline |
| 720-306 | Denver | Denver | Eschelon Telecom Of Colorado, Inc. - CO | Landline |
| 720-307 | Boulder | Lyons | At&t Local | Landline |
| 720-308 | Denver | Denver | New Cingular Wireless Pcs, Llc | Landline |
| 720-309 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-310 | Boulder | Lyons | Teleport Communications America, Llc - CO | Landline |
| 720-312 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-313 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-314 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-315 | Denver | Denver | Onvoy, Llc - CO | Landline |
| 720-316 | Denver | Denver | Bandwidth.com Clec, Llc - CO | Landline |
| 720-317 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-318 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-319 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-320 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-321 | Denver | Denver | Qwest Corporation | Landline |
| 720-322 | Denver | Denver | Qwest Corporation | Landline |
| 720-323 | Denver | Denver | T-Mobile Usa, Inc. | Wireless |
| 720-324 | Adams | Aurora | Comcast Phone Of Colorado, Llc - CO | Landline |
| 720-325 | Adams | Aurora | T-Mobile Usa, Inc. | Wireless |
| 720-326 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-327 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-328 | Denver | Denver | Comcast Phone Of Colorado, Llc - CO | Landline |
| 720-329 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-330 | Denver | Denver | Icg Telecom Group - CO | Landline |
| 720-331 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-332 | Denver | Denver | Mcimetro Access Transmission Services Llc | Landline |
| 720-333 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-334 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-335 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-336 | Weld | Keenesburg | Bandwidth.com Clec, Llc - CO | Landline |
| 720-337 | Denver | Denver | Qwest Corporation | Landline |
| 720-338 | Denver | Denver | New Cingular Wireless Pcs, Llc | Wireless |
| 720-339 | Denver | Denver | Sprint Spectrum L.p. | Wireless |
| 720-340 | Boulder | Longmont | Cellco Partnership Dba Verizon Wireless - CO | Wireless |
| 720-341 | Denver | Denver | T-Mobile Usa, Inc. | Wireless |
| 720-342 | Denver | Denver | At&t Local | Landline |
| Phone Number 720-386-1901 |
USAGE Landline |
City Idaho Springs |
Operate Read more about who called from 7203861901 |
Update Time Mar-26-2026 |
| Phone Number 720-233-3101 |
USAGE Wireless |
City Denver |
Operate Read more about who called from 7202333101 |
Update Time Mar-26-2026 |
| Phone Number 720-584-4671 |
USAGE Wireless |
City Denver |
Operate Read more about who called from 7205844671 |
Update Time Mar-26-2026 |
| Phone Number 720-903-4814 |
USAGE Landline |
City Denver |
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Update Time Mar-26-2026 |
| Phone Number 720-456-3746 |
USAGE Landline |
City Denver |
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Update Time Mar-26-2026 |
| Phone Number 720-806-2758 |
USAGE Landline |
City Denver |
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Update Time Mar-26-2026 |
| Phone Number 720-457-5501 |
USAGE Landline |
City Denver |
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Update Time Mar-26-2026 |
| Phone Number 720-219-6709 |
USAGE Wireless |
City Denver |
Operate Read more about who called from 7202196709 |
Update Time Mar-26-2026 |
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