phone.gd North American phone lookup, short codes, caller signals, and complaint-driven research.

303-523

You are reviewing the Area Code (NPA/NXX) report for 303-523. Did you mean to search the SMS short code 303523?

North American Phone Intelligence

Search a phone number, area code, exchange, or short code

Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.

Examples: 206-739-5800, 206, 206-739, 48369
Raw Number303523
Basic Format303-523
NPA (Area Code)303
NXX523

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeCityState
303-523-XXXX6529T-MOBILE USA, INC.DENVERASDENVERCO

Business/Government Phones on the 303-523 Prefix

PhoneNameAddress
303-523-0165Colorado Custom Basements and Remodeling, LLC
303-523-1205Harpel
303-523-1382Hawkeye Heating and Air Conditioning LLC
303-523-1382Trusted Handy Pros, LLC
303-523-1879Jose's Landscaping
303-523-2605Mile High Suds Window Washing LLC.
303-523-3820Revamped Flooring
303-523-4010Mamal Inc.
303-523-5867Stylistic Hardwood, Inc.
303-523-7653First Integrity Home Buyers
303-523-4810Havana ParkEast Iliff Avenue Aurora 80014 US
303-523-6583New Moon SpaUS

Reports

Anonymous User from Massillon, Ohio

April 14, 2026 at 1:40 PM

303-523-3682 reported as a unwanted call. Received on February 25, 2026 at 5:03 PM.
Call for No Subject Provided

Anonymous User from , CO

March 16, 2026 at 6:17 PM

30352361235 reported as a Robocall. Received on March 16, 2026 at 4:10 PM.
Call for Dropped call or no message

Anonymous User from Littleton, Colorado

September 30, 2025 at 12:47 PM

303-523-3966 reported as a Robocall. Received on September 30, 2025 at 8:01 AM.
Call for Dropped call or no message

Anonymous User from , AZ

May 8, 2025 at 8:45 PM

303-523-2183 reported as a Robocall. Received on May 1, 2025 at 12:00 AM.
Call for No Subject Provided

Anonymous User from Anchorage, Alaska

February 14, 2025 at 1:50 PM

303-523-3494 reported as a Robocall. Received on February 12, 2025 at 11:36 AM.

Anonymous User from , CA

November 5, 2024 at 6:56 PM

303-523-0855 reported as a Robocall. Received on October 15, 2024 at 8:58 AM.

Anonymous User from Denver, CO

December 19, 2023 at 9:13 PM

None reported as a Prerecorded Voice. Received on December 19, 2023 at 2:00 PM.
Unwanted call for unknown
Caller ID indicated they called from 303-523-4170
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Colorado Springs, Colorado

December 7, 2023 at 4:07 PM

303-523-3009 reported as a Live Voice or Other. Received on November 30, 2023 at 11:56 AM.

Anonymous User from Thornton, Colorado

June 30, 2023 at 5:08 PM

303-523-2278 reported as a Live Voice or Other. Received on June 30, 2023 at 1:00 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Matthews, North Carolina

April 25, 2023 at 12:26 PM

303-523-3443 reported as a Live Voice or Other. Received on April 25, 2023 at 12:21 PM.
Call for Dropped call or no message

Anonymous User from Matthews, North Carolina

April 25, 2023 at 12:25 PM

303-523-3443 reported as a Live Voice or Other. Received on April 25, 2023 at 12:25 PM.
Call for Dropped call or no message

Anonymous User from Alexandria, California

February 7, 2023 at 4:10 PM

303-523-2183 reported as a Robocall. Received on February 4, 2023 at 9:39 PM.
Call for Dropped call or no message

Anonymous User from Longmont, CO

November 2, 2022 at 9:42 PM

303-523-7558 reported as a Prerecorded Voice. Received on November 2, 2022 at 3:22 PM.
Unwanted call for Other Services
Caller ID indicated they called from 303-789-2888
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Denver, Colorado

November 1, 2022 at 11:56 AM

303-523-7564 reported as a Robocall. Received on November 1, 2022 at 9:50 AM.

Anonymous User from Arvada, California

August 11, 2022 at 10:13 AM

303-523-3009 reported as a Live Voice or Other. Received on August 10, 2022 at 4:48 PM.

Anonymous User from , IN

July 19, 2022 at 8:09 PM

303-523-7004 reported as a Live Voice or Other. Received on July 19, 2022 at 8:00 PM.
Call for No Subject Provided

Anonymous User from Powell, Ohio

June 30, 2022 at 3:49 PM

303-523-1840 reported as a unwanted call. Received on June 30, 2022 at 3:47 PM.

Anonymous User from Orchard, CO

June 2, 2022 at 5:31 PM

303-523-3725 reported as a Live Voice. Received on June 2, 2022 at 11:23 AM.
Unwanted call for Amazon Services
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Parker, CO

June 11, 2021 at 5:16 PM

None reported as a Live Voice. Received on June 11, 2021 at 9:39 AM.
Unwanted call for unknown
Caller ID indicated they called from 303-523-2001
Contacted via Wired

Anonymous User from Ipswich, MA

June 3, 2021 at 9:24 PM

303-523-3500 reported as a Live Voice. Received on June 3, 2021 at 5:00 PM.
Unwanted call for unknown
Contacted via Internet (VOIP)

Anonymous User from , CO

June 29, 2017 at 6:26 PM

None reported as a Prerecorded Voice. Received on June 29, 2017 at 12:00 PM.
Unwanted call for unknown
Caller ID indicated they called from 303-523-8653
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CO

April 28, 2017 at 10:55 PM

None reported as a Abandoned Calls. Received on April 18, 2017 at 12:00 AM.
Unwanted call for unknown
Caller ID indicated they called from 303-523-7225
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CO

February 17, 2016 at 9:06 PM

reported as a Prerecorded Voice. Received on February 17, 2016 at 1:00 PM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-523-0328
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CO

December 4, 2015 at 5:30 PM

reported as a Prerecorded Voice. Received on December 4, 2015 at 9:22 AM.
Robocall for unknown
Caller ID indicated they called from 303-523-1039
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CA

September 22, 2015 at 4:26 AM

reported as a Live Voice. Received on September 21, 2015 at 10:18 AM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-523-1291
Contacted via Wireless (cell phone/other mobile device)

Most 'popular' numbers on this prefix:

303-523-0XXX: 303-523-0010 | 303-523-0011 | 303-523-0015 | 303-523-0017 | 303-523-0020 | 303-523-0052 | 303-523-0300 | 303-523-0303 | 303-523-0320 | 303-523-0323 | 303-523-0325 | 303-523-0350 | 303-523-0470 | 303-523-0476 | 303-523-0477 | 303-523-0488 | 303-523-0493 | 303-523-0600 | 303-523-0601 | 303-523-0630 | 303-523-0670 | 303-523-0671 | 303-523-0675 | 303-523-0700 | 303-523-0707 | 303-523-0730 | 303-523-0733 | 303-523-0735 | 303-523-0777 | 303-523-0800 | 303-523-0808 | 303-523-0850 | 303-523-0851 | 303-523-0888 |
303-523-1XXX: 303-523-1000 | 303-523-1001 | 303-523-1003 | 303-523-1035 | 303-523-1038 | 303-523-1039 | 303-523-1212 | 303-523-1234 | 303-523-1262 | 303-523-1291 | 303-523-1295 | 303-523-1299 | 303-523-1300 | 303-523-1308 | 303-523-1331 | 303-523-1380 | 303-523-1383 | 303-523-1388 | 303-523-1700 | 303-523-1747 | 303-523-1762 | 303-523-1764 | 303-523-1767 | 303-523-1777 | 303-523-1800 | 303-523-1852 | 303-523-1875 | 303-523-1877 | 303-523-1878 | 303-523-1887 | 303-523-1900 | 303-523-1903 | 303-523-1905 | 303-523-1991 | 303-523-1997 | 303-523-1998 |
303-523-2XXX: 303-523-2000 | 303-523-2002 | 303-523-2006 | 303-523-2077 | 303-523-2187 | 303-523-2188 | 303-523-2189 | 303-523-2197 | 303-523-2500 | 303-523-2501 | 303-523-2510 | 303-523-2511 | 303-523-2515 | 303-523-2525 | 303-523-2600 | 303-523-2601 | 303-523-2606 | 303-523-2607 | 303-523-2657 | 303-523-2658 | 303-523-2700 | 303-523-2710 | 303-523-2711 | 303-523-2712 | 303-523-2777 |
303-523-3XXX: 303-523-3000 | 303-523-3001 | 303-523-3003 | 303-523-3030 | 303-523-3062 | 303-523-3400 | 303-523-3440 | 303-523-3443 | 303-523-3444 | 303-523-3500 | 303-523-3501 | 303-523-3508 | 303-523-3550 | 303-523-3700 | 303-523-3720 | 303-523-3721 | 303-523-3722 | 303-523-3777 |
303-523-4XXX: 303-523-4000 | 303-523-4010 | 303-523-4015 | 303-523-4017 | 303-523-4052 | 303-523-4062 | 303-523-4133 | 303-523-4139 | 303-523-4143 | 303-523-4170 | 303-523-4173 | 303-523-4178 | 303-523-4400 | 303-523-4440 | 303-523-4444 | 303-523-4490 | 303-523-4495 | 303-523-4499 | 303-523-4500 | 303-523-4508 | 303-523-4520 | 303-523-4521 | 303-523-4523 | 303-523-4700 | 303-523-4730 | 303-523-4735 | 303-523-4737 | 303-523-4777 | 303-523-4800 | 303-523-4810 | 303-523-4811 | 303-523-4815 | 303-523-4888 |
303-523-5XXX: 303-523-5808 | 303-523-5820 | 303-523-5850 | 303-523-5860 | 303-523-5862 | 303-523-5865 |
303-523-6XXX: 303-523-6500 | 303-523-6501 | 303-523-6550 | 303-523-6580 | 303-523-6583 | 303-523-6588 | 303-523-6800 | 303-523-6801 | 303-523-6808 | 303-523-6810 | 303-523-6811 | 303-523-6815 |
303-523-7XXX: 303-523-7000 | 303-523-7002 | 303-523-7007 | 303-523-7040 | 303-523-7070 | 303-523-7100 | 303-523-7140 | 303-523-7141 | 303-523-7144 | 303-523-7195 | 303-523-7197 | 303-523-7200 | 303-523-7220 | 303-523-7222 | 303-523-7227 | 303-523-7257 | 303-523-7258 | 303-523-7500 | 303-523-7550 | 303-523-7555 | 303-523-7557 |
303-523-8XXX: 303-523-8000 | 303-523-8003 | 303-523-8006 | 303-523-8008 | 303-523-8020 | 303-523-8022 | 303-523-8026 | 303-523-8600 | 303-523-8601 | 303-523-8650 | 303-523-8651 | 303-523-8655 | 303-523-8660 | 303-523-8700 | 303-523-8701 | 303-523-8777 | 303-523-8790 | 303-523-8797 | 303-523-8799 |
303-523-9XXX: 303-523-9300 | 303-523-9303 | 303-523-9330 | 303-523-9380 | 303-523-9385 | 303-523-9387 |