303-800 PHONE NUMBERS DIRECTORY

To make looking up a phone number easier when you’re not sure about the last 4 digits, we grouped them below by hundreds.

(303) 800-xxxx Phone Numbers grouped by hundreds

40XX - 49XX
The 303-800-XXXX area code prefix is located in Denver, Colorado including Aurora, Golden and was originally put into service on February 4th 1994. Run a search and find out who's calling you now.

Recently Reported Numbers

(303) 800-5033Unknown

Calls every 3 days and never leaves a message

(303) 800-8479Unknown

Keeps calling and I am on a do not call list

(303) 800-2660Dangerous

A robo call saying the power company was going to turn off power in 30 minutes if we didn't return call. I reported this to the Power Company, which everyone should do.

(303) 800-3867Unknown

Any ideas who this might be?

(303) 800-8266Harassing

Car warranty scam

(303) 800-4259Dangerous

Called - no message left ... some financial company scam

(303) 800-4854Unknown

Who owns this number?

(303) 800-8479Unknown

I called from the Entrepreneur's Source to see if you have an interest in self employment opportunities.

(303) 800-8479Unknown

I called from the Entrepreneur's Source to see if you have an interest in self employment opportunities.

(303) 800-8479Unknown

Caller was from Entrepreneur's Source, franchise sales company from what I can tell. Polite and to the point.

(303) 800-2660Dangerous

robo call stating the power co. was enroute to disconnect our service , to call this numer which is not the power company.

(303) 800-8479Unknown

Called and left no message.

(303) 800-8479Neutral

Immediately goes to a recorded message. A British female voice requesting that a message be left. Nope!!

(303) 800-8479Unknown

This number called me in the morning and did not leave a voice mail. Very suspect.

(303) 800-8479Unknown

Called twice while on the phone, left no voice-mail and had an automated answering machine when I called back.

(303) 800-2660Neutral

They are repeatedly calling our medical.clinic business office. And they won't stop

(303) 800-2660Neutral

Yeah, these IDIOTS keep calling my phone, and I keep telling them that they have the wrong # but they keep calling anyway!

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.

303-800-7039
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Cbeyond Communications
303-800-1363
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UNKNOWN
303-800-9367
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Qwest Corporation
303-800-5406
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Teleport Communications America
303-800-6747
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New Cingular Wireless PCS
303-800-8904
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UNKNOWN
303-800-5002
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Qwest Corporation
303-800-7841
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Usa Mobility Wireless
303-800-5396
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UNKNOWN
303-800-1164
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Qwest Corporation
303-800-7351
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Icg Telecom Group
303-800-1405
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Qwest Corporation
303-800-6316
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Qwest Corporation
303-800-9259
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Sprint Spectrum L.p.
303-800-2969
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Icg Telecom Group
303-800-3751
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Cellco Partnership DBA Verizon Wireless

Most searched numbers

Cell
All TimeThis Month
303-800-3109First seen 2019-09-22303-800-9910First seen 2010-05-17
303-800-4759First seen 2010-07-09303-800-1160First seen 2012-10-15
303-800-3003First seen 2016-07-07303-800-8368First seen 2018-10-29
303-800-1671First seen 2015-10-29303-800-9455First seen 2016-06-18
303-800-4263First seen 2013-08-23303-800-2073First seen 2011-12-03
Landline
All TimeThis Month
303-800-8945First seen 2015-06-03303-800-5613First seen 2019-08-25
303-800-3035First seen 2013-03-10303-800-8197First seen 2014-07-08
303-800-7456First seen 2017-08-22303-800-3292First seen 2013-08-05
303-800-3068First seen 2019-07-04303-800-7975First seen 2013-03-26
303-800-9198First seen 2010-09-18303-800-2569First seen 2011-08-06

Cities With coverage

CITY LIST
Allenspark
Aurora
Bennett
Brighton
Byers
Deer Trail
Denver
Englewood
Fort Lupton
Golden
Hudson
Idaho Springs
Keenesburg
Littleton
Longmont
Louisville
Lyons
Roggen
Sedalia
Strasburg