Area code 720 was first put in service June 01, 1998. Area code 720 is in USA (Colorado). 1-800-database has 2615 records on file with a phone number in the area code of (720) and 155 comments.

The carriers providing phone numbers in 720 area code are: 360networks (usa) Inc., 365 Wireless, American Messaging (am), AT&T Local, Bandwidth.com Clec, Broadvox-clec, Cbeyond Communications, Cellco Partnership DBA Verizon Wireless, Centurylink Communications LLC, Comcast Phone Of Colorado, Commnet Wireless, Dishnet Wireline, L.l.c., Eschelon Telecom Of Colorado, Global Crossing Local Services-co, Hypercube Telecom, Icg Telecom Group, Iloka DBA Newcloud Networks, Leap Wireless Intl DBA Cricket Comm, Level 3 Communications, Mcimetro Access Transmission Services LLC, Mcleodusa Telecommunications Services- Co, Metro PCS, Neutral Tandem-colorado, New Cingular Wireless PCS, Onvoy, Peerless Network Of Colorado, Qwest Corporation, Sprint Spectrum L.p., Teleport Communications America, Teliax, Telstar Communications Inc, T-mobile Usa, Tw Telecom Of Colorado LLC, Xo Colorado, Ymax Communications Corp., Zippytech Incorporated.

Counties located in area code 720 are: ADAMS, ARAPAHOE, BOULDER, BROOMFIELD, CLEAR CREEK, DENVER, DOUGLAS, JEFFERSON, PARK, WELD.



State: Colorado

Largest city: Denver

In service since: 06/01/1998

Timezone: Mountain


Major Cities in 720
Denver, CO (600,158)
Aurora, CO (325,078)
Lakewood, CO (142,980)
Thornton, CO (118,772)
Arvada, CO (106,433)
Westminster, CO (106,114)
Boulder, CO (97,385)
Longmont, CO (86,270)
Loveland, CO (66,859)
Broomfield, CO (55,889)
Zip Codes in 720
8000280010
8001480015
8002080022
8002780030
8010480105
8011080111
8011280120
8012380126
8013480202
8020580209
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