720 Area Code Prefixes Directory

If you know the complete number you’re looking up, please use the Phone Number Search above. Or to explore prefixes in different coverage areas, please use the tables below.

AT&T Local
Carrier

Coverage Area
Counties: Boulder, Denver, Larimer,
Cities: Longmont, Denver, Lyons, Aurora

Mcleodusa Telecommunications Services- Co
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Eschelon Telecom Of Colorado
Carrier

Coverage Area
Counties: Denver,
Cities: Denver, Aurora

Cbeyond Communications
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Icg Telecom Group
Carrier

Coverage Area
Counties: , Denver, Boulder
Cities: Aurora, Denver, Longmont

Tw Telecom Of Colorado LLC
Carrier

Coverage Area
Counties: , Denver
Cities: Aurora, Denver

Comcast Phone Of Colorado
Carrier

Coverage Area
Counties: Denver,
Cities: Denver, Aurora

Bandwidth.com Clec
Carrier

Coverage Area
Counties: , Denver, Clear Creek, Adams, Boulder, Weld
Cities: Aurora, Denver, Keenesburg, Idaho Springs, Brighton, Longmont, Fort Lupton

360networks (usa) Inc.
Carrier

Coverage Area
Counties: Denver, Boulder,
Cities: Denver, Longmont, Henderson

Mcimetro Access Transmission Services LLC
Carrier

Coverage Area
Counties: Denver, , Adams
Cities: Denver, Hudson, Brighton

Zippytech Incorporated
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Commnet Wireless
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Iloka DBA Newcloud Networks
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Ymax Communications Corp.
Carrier

Coverage Area
Cities: Deer Trail

Peerless Network Of Colorado
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Hypercube Telecom
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Broadvox-clec
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Onvoy
Carrier

Coverage Area
Counties: Denver,
Cities: Denver, Sedalia

American Messaging (am)
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Global Crossing Local Services-co
Carrier

Coverage Area
Counties: Denver
Cities: Denver

365 Wireless
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Neutral Tandem-colorado
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Telstar Communications Inc
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Teliax
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Centurylink Communications LLC
Carrier

Coverage Area
Counties: Denver
Cities: Denver

Dishnet Wireline, L.l.c.
Carrier

Coverage Area
Counties: Denver
Cities: Denver

The 720 area code is located in Denver, Colorado including Longmont, Englewood and was originally put into service on January 1st 1970. Find whose number this is.

Recently Reported Numbers

(720) 552-9048Dangerous

Agree with other comments - Called from a different number but this was the one left in the voicemail. Didn't say what company he was from

(720) 523-9030Unknown

got a disconnected call when answered

(720) 523-0084Unknown

Received a phone call. No message left.

(720) 204-9799Unknown

Called me on my mobile number. I didn't pick up.

(720) 340-7889Dangerous

Got a message from this number. Expletives and Muhammad memes mad them stop.

(720) 571-9249Unknown

This number called several times.

(720) 251-2203Neutral

Sneak no name "Denver CO" political GOP/Trump call. Uses different no name repeat calls under different numbers.

(720) 933-0144Unknown

Political Robocall

(720) 776-4842Unknown

Just got a missed call from this number.

(720) 431-9105Unknown

The caller left no voice message.

Recently Searched Numbers

No additional information reported for these searched numbers. Received a call from any phone number listed below? Please consider helping the community by reporting your experience.

720-925-6068
Report
UNKNOWN
720-300-4001
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Sprint Spectrum
720-650-2157
Report
UNKNOWN
720-853-9094
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UNKNOWN
720-643-2103
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UNKNOWN
720-305-6184
Report
Tw Telecom Of Colorado LLC
720-958-7324
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UNKNOWN
720-176-5136
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UNKNOWN
720-912-5674
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UNKNOWN
720-982-2757
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Sprint Spectrum
720-196-9283
Report
UNKNOWN
720-805-1924
Report
UNKNOWN
720-442-9263
Report
Bandwidth.com Clec
720-263-2481
Report
Level 3 Communications
720-649-7726
Report
UNKNOWN
720-863-4755
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Xo Colorado
720-205-4644
Report
Sprint Spectrum
720-550-4926
Report
Mcleodusa Telecommunications Services- Co
720-967-3288
Report
UNKNOWN

Most searched numbers

Cell
All TimeThis Month
720-961-4335First seen 2015-01-11720-422-7787First seen 2019-06-09
720-599-9351First seen 2010-10-11720-540-2840First seen 2011-03-14
720-877-1581First seen 2011-06-16720-359-3227First seen 2013-11-16
720-397-2295First seen 2017-05-19720-584-5812First seen 2017-11-14
720-285-8763First seen 2019-11-11720-694-4489First seen 2017-04-30
Landline
All TimeThis Month
720-665-2117First seen 2012-12-06720-872-8881First seen 2011-01-07
720-335-8333First seen 2016-01-10720-687-5121First seen 2019-02-05
720-639-7106First seen 2012-08-05720-845-2968First seen 2020-05-19
720-355-4565First seen 2012-01-24720-336-9133First seen 2010-01-22
720-423-9608First seen 2019-12-18720-394-5817First seen 2012-04-10

Cities With coverage

CITY LIST
Aurora
Brighton
Deer Trail
Denver
Englewood
Fort Lupton
Golden
Henderson
Hudson
Idaho Springs
Keenesburg
Littleton
Longmont
Lyons
Sedalia