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720-423

You are reviewing the Area Code (NPA/NXX) report for 720-423. Did you mean to search the SMS short code 720423?

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Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
Examples: 206-739-5800, 206, 206-739, 48369
Raw Number720423
Basic Format720-423
NPA (Area Code)720
NXX423

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
720-423-0XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-1XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-2XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-3XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-4XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE07/15/2004
720-423-5XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-6XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-7XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-8XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE07/15/2004
720-423-9XXX9636QWEST CORPORATIONDENVERAS04/26/2004DENVERCOWE06/15/2004
720-423-XXXX9636QWEST CORPORATIONDENVERAS04/22/2004DENVERCO

Business/Government Phones on the 720-423 Prefix

PhoneNameAddress
720-423-6300Manual High School1700 East 28th Avenue Denver 80205 US
720-423-7600Evie Garrett Dennis Campus4800 Telluride Street Denver 80249 US
720-423-8000Northfield High School5500 Central Park Boulevard Denver 80238 US
720-423-9120Cole Arts & Science Academy3240 Humboldt Street Denver 80205 US
720-423-9123Cole Arts & Science Academy3240 Humboldt Street Denver 80205 US
720-423-9500Hamilton Middle School8600 East Dartmouth Avenue Denver 80231 US
720-423-9900Isabella Bird Community School2701 Lima Street Denver 80238 US

Reports

Anonymous User from Golden, Colorado

March 26, 2026 at 7:35 PM

720-423-6018 reported as a Robocall. Received on March 26, 2026 at 1:40 PM.
Call for Medical & prescriptions

Anonymous User from Lawrenceville, Georgia

January 20, 2026 at 12:17 PM

720-423-4653 reported as a Live Voice or Other. Received on January 20, 2026 at 12:05 PM.
Call for Medical & prescriptions

Anonymous User from Aurora, Colorado

January 16, 2026 at 3:39 PM

720-423-8161 reported as a Robocall. Received on January 16, 2026 at 8:00 AM.
Call for Home improvement & cleaning

Anonymous User from Erie, Colorado

January 6, 2026 at 1:14 PM

720-423-7194 reported as a Live Voice or Other. Received on January 6, 2026 at 12:00 AM.

Anonymous User from , CO

December 4, 2025 at 7:26 PM

720-423-5024 reported as a Live Voice or Other. Received on December 4, 2025 at 4:18 PM.
Call for Medical & prescriptions

Anonymous User from , LA

January 30, 2025 at 3:58 PM

7204239 reported as a Live Voice or Other. Received on January 30, 2025 at 10:31 AM.
Call for Dropped call or no message

Anonymous User from Brighton, CO

September 12, 2024 at 8:05 PM

reported as a Live Voice. Received on September 12, 2024 at 9:26 AM.
Unwanted call for unknown
Caller ID indicated they called from 720-423-3259
Contacted via Internet (VOIP)

Anonymous User from , CO

July 15, 2024 at 2:09 PM

720-423-4716 reported as a Robocall. Received on July 15, 2024 at 12:01 PM.
Call for Medical & prescriptions

Anonymous User from Bozeman, Montana

January 25, 2024 at 7:22 PM

720-423-8002 reported as a Robocall. Received on January 25, 2024 at 11:16 AM.

Anonymous User from Aurora, Colorado

September 22, 2023 at 1:07 PM

720-423-1981 reported as a Live Voice or Other. Received on September 22, 2023 at 10:58 AM.

Anonymous User from Highlands Ranch, Colorado

December 5, 2022 at 5:08 PM

720-423-0511 reported as a Robocall. Received on December 5, 2022 at 3:00 PM.
Call for Medical & prescriptions

Anonymous User from Lahaina, HI

October 26, 2020 at 3:58 AM

None reported as a Prerecorded Voice. Received on October 25, 2020 at 5:43 PM.
Unwanted call for unknown
Caller ID indicated they called from 720-423-3098
Contacted via Wireless (cell phone/other mobile device)

Most 'popular' numbers on this prefix:

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