USA Phone Code Guide
USA Phone
Code Guide

Telephone Area +1 (720) XXX-XXXX / Page 3

Phone numbers of the state Colorado
Prefix: +1720
This prefix is distributed within the state Colorado
The largest city in the region is Denver
Time Zone: Mountain
Winter time: UTC-7
Summer time: UTC-6
Below on the map, there is indicated the largest city in the telephone area +1-720-...-.... Colorado Denver.

In the United States, telephone numbers are divided into a country code (+1), an area code (or prefix), which is three digits long, and a subscriber number (seven digits). These are just a few examples, and there are over 300 area codes in the United States. Each code can cover both large cities and less populated areas depending on population density and telephone network distribution.



The table below shows the main major cities and telecom operators.

If you notice any errors of any community’s location on the map, please report it via the feedback form.

Phone numbers +1 (720) XXX-XXXX

Other pages: 12356
Company District Major City Prefix
Qwest CorporationDenverDenver, CO+1 (720) 493-XXXX
Qwest CorporationBoulderLongmont, CO+1 (720) 494-XXXX
Leap Wireless Intl DBA Cricket CommJeffersonDenver, CO+1 (720) 495-XXXX
Level 3 CommunicationsJeffersonDenver, CO+1 (720) 496-XXXX
Qwest CorporationJeffersonGolden, CO+1 (720) 497-XXXX
Cellco Partnership DBA Verizon WirelessAurora, CO+1 (720) 505-XXXX
Level 3 CommunicationsDenverDenver, CO+1 (720) 506-XXXX
Xo ColoradoDenver, CO+1 (720) 509-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 514-XXXX
Bandwidth.com ClecDenver, CO+1 (720) 515-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 519-XXXX
American Messaging (am)DenverDenver, CO+1 (720) 521-XXXX
Xo ColoradoEnglewood, CO+1 (720) 522-XXXX
Qwest CorporationBrighton, CO+1 (720) 523-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 524-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 528-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 529-XXXX
New Cingular Wireless PCSJeffersonDenver, CO+1 (720) 530-XXXX
Teleport Communications GroupArapahoeAurora, CO+1 (720) 532-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 533-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 535-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 536-XXXX
New Cingular Wireless PCS+1 (720) 539-XXXX
Qwest CorporationAdamsDenver, CO+1 (720) 540-XXXX
Qwest CorporationAdamsDenver, CO+1 (720) 542-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 544-XXXX
Level 3 CommunicationsDenver, CO+1 (720) 545-XXXX
Global Crossing Local Services-coJeffersonDenver, CO+1 (720) 548-XXXX
Level 3 CommunicationsDenverDenver, CO+1 (720) 549-XXXX
Leap Wireless Intl DBA Cricket CommDenver, CO+1 (720) 551-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 554-XXXX
Cellco Partnership DBA Verizon Wireless+1 (720) 556-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 558-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 559-XXXX
New Cingular Wireless PCSJeffersonDenver, CO+1 (720) 560-XXXX
Qwest CorporationDenver, CO+1 (720) 561-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 562-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 563-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 564-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 565-XXXX
Qwest CorporationAdamsDenver, CO+1 (720) 566-XXXX
Level 3 CommunicationsAdamsDenver, CO+1 (720) 567-XXXX
Qwest CorporationAdamsDenver, CO+1 (720) 568-XXXX
Leap Wireless Intl DBA Cricket CommDenver, CO+1 (720) 569-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 570-XXXX
Qwest CorporationDenverDenver, CO+1 (720) 578-XXXX
Allegiance Telecom Of ColoradoDenverDenver, CO+1 (720) 579-XXXX
Sprint Spectrum L.p.JeffersonDenver, CO+1 (720) 581-XXXX
360networks (usa) Inc.Denver, CO+1 (720) 583-XXXX
AT&T LocalDenverDenver, CO+1 (720) 587-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 596-XXXX
Bandwidth.com ClecIdaho Springs, CO+1 (720) 608-XXXX
Leap Wireless Intl DBA Cricket CommJeffersonDenver, CO+1 (720) 620-XXXX
Leap Wireless Intl DBA Cricket CommJeffersonDenver, CO+1 (720) 621-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 622-XXXX
Teleport Communications GroupArapahoeDenver, CO+1 (720) 624-XXXX
+1 (720) 625-XXXX
Cellco Partnership DBA Verizon WirelessDenver, CO+1 (720) 626-XXXX
Leap Wireless Intl DBA Cricket CommJeffersonDenver, CO+1 (720) 628-XXXX
Leap Wireless Intl DBA Cricket CommJeffersonDenver, CO+1 (720) 629-XXXX
New Cingular Wireless PCSDenver, CO+1 (720) 633-XXXX
New Cingular Wireless PCSJeffersonDenver, CO+1 (720) 635-XXXX
Nextel CommunicationsJeffersonDenver, CO+1 (720) 641-XXXX
Mcleodusa Telecommunications Services- Co+1 (720) 644-XXXX
Cellco Partnership DBA Verizon Wireless+1 (720) 648-XXXX
Qwest CorporationBoulderLongmont, CO+1 (720) 652-XXXX
Telstar Communications IncDenver, CO+1 (720) 658-XXXX
Bandwidth.com ClecDenver, CO+1 (720) 663-XXXX
Cellco Partnership DBA Verizon WirelessArapahoeAurora, CO+1 (720) 670-XXXX
Leap Wireless Intl DBA Cricket CommDenver, CO+1 (720) 675-XXXX
Icg Telecom GroupBoulderLongmont, CO+1 (720) 684-XXXX
Qwest CorporationAdamsBrighton, CO+1 (720) 685-XXXX
Xo ColoradoDenver, CO+1 (720) 686-XXXX
Bandwidth.com Clec+1 (720) 689-XXXX
Leap Wireless Intl DBA Cricket CommJeffersonDenver, CO+1 (720) 690-XXXX
Qwest Communications CompanyDenver, CO+1 (720) 722-XXXX
Sprint Spectrum L.p.JeffersonDenver, CO+1 (720) 732-XXXX
Qwest CorporationJeffersonDenver, CO+1 (720) 733-XXXX
Qwest CorporationArapahoeAurora, CO+1 (720) 744-XXXX
Qwest CorporationJeffersonGolden, CO+1 (720) 746-XXXX

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