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303-823

You are reviewing the Area Code (NPA/NXX) report for 303-823. Did you mean to search the SMS short code 303823?

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Examples: 206-739-5800, 206, 206-739, 48369
Raw Number303823
Basic Format303-823
NPA (Area Code)303
NXX823

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
303-823-0XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-1XXX114JEXIANT COMMUNICATIONS LLCALLNSPKLYNAS09/15/2025ALLENSPARK-LYONSCOWE10/09/2025
303-823-2XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-3XXX883KAHOI LLCALLNSPKLYNAS11/13/2025ALLENSPARK-LYONSCOWE12/07/2025
303-823-4XXX7229MCIMETRO ACCESS TRANSMISSION SERVICES LLCALLNSPKLYNAS06/12/2009ALLENSPARK-LYONSCOWE09/30/2009
303-823-5XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-6XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-7XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-8XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-9XXX9636QWEST CORPORATIONALLNSPKLYNRTALLENSPARK-LYONSCOWE
303-823-XXXX9636QWEST CORPORATIONALLNSPKLYNASALLENSPARK-LYONSCO

Business/Government Phones on the 303-823 Prefix

PhoneNameAddress
303-823-2365Stonescape Steel Roofing
303-823-3030Ace Heating & Cooling, LLC
303-823-4660Mighty Dog Roofing of Boulder
303-823-6268Loukonen Bros. Stone Co.
303-823-5647Wildcat Mountaineering430 Main Street Lyons 80540 US
303-823-5800Lyons Dairy Bar138 Main Street Lyons 80540 US
303-823-8455Greenwood Wildlife Rehabilitation Center5761 Ute Highway US

Reports

Anonymous User from Longmont, Colorado

April 7, 2026 at 3:33 PM

303-823-6054 reported as a Robocall. Received on April 7, 2026 at 1:21 PM.

Anonymous User from , CO

January 21, 2026 at 4:55 PM

303-823-4738 reported as a Robocall. Received on January 21, 2026 at 1:25 PM.

Anonymous User from Austin, Colorado

January 8, 2026 at 11:01 AM

303-823-9286 reported as a Robocall. Received on January 8, 2026 at 8:06 AM.
Call for Home improvement & cleaning

Anonymous User from , CO

December 9, 2025 at 4:11 PM

303-823-0960 reported as a Live Voice or Other. Received on December 9, 2025 at 2:10 PM.
Call for Medical & prescriptions

Anonymous User from Longmont, Colorado

November 25, 2025 at 5:54 PM

303-823-5954 reported as a Robocall. Received on November 25, 2025 at 3:49 PM.
Call for Medical & prescriptions

Anonymous User from New Cumberland, Pennsylvania

September 23, 2025 at 4:35 PM

303-823-6852 reported as a Live Voice or Other. Received on September 23, 2025 at 4:31 PM.
Call for Dropped call or no message

Anonymous User from Oyster Bay, NY

September 22, 2025 at 1:50 PM

303-823-0881 reported as a Live Voice. Received on September 22, 2025 at 9:22 AM.
Unwanted call for Credit Card Debt Services
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Austin, TX

September 20, 2025 at 10:05 PM

reported as a Live Voice. Received on September 20, 2025 at 4:56 PM.
Unwanted call for unknown
Caller ID indicated they called from 303-823-1008
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , WA

September 20, 2025 at 6:16 PM

303-823-4027 reported as a Live Voice or Other. Received on September 20, 2025 at 3:10 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Middleburg, Florida

September 20, 2025 at 3:32 PM

303-823-7893 reported as a Robocall. Received on September 20, 2025 at 3:21 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Lakewood, Colorado

August 18, 2025 at 3:05 PM

303-823-4320 reported as a Live Voice or Other. Received on July 29, 2025 at 8:59 AM.

Anonymous User from , CA

August 8, 2025 at 12:33 AM

303-823-2365 reported as a unwanted call. Received on August 4, 2025 at 10:15 AM.
Call for No Subject Provided

Anonymous User from Golden, Colorado

July 22, 2025 at 9:34 PM

303-823-4321 reported as a Live Voice or Other. Received on July 22, 2025 at 2:08 PM.

Anonymous User from Denver, Colorado

June 2, 2025 at 3:26 PM

303-823-4951 reported as a unwanted call. Received on June 2, 2025 at 1:25 PM.
Call for No Subject Provided

Anonymous User from Westminster, Colorado

April 12, 2025 at 11:52 AM

303-823-7242 reported as a Live Voice or Other. Received on April 10, 2025 at 1:54 AM.

Anonymous User from , CO

April 9, 2025 at 11:17 AM

303-823-2056 reported as a Robocall. Received on April 8, 2025 at 10:09 AM.
Call for No Subject Provided

Anonymous User from Glyndon, Minnesota

March 28, 2025 at 5:21 PM

303-823-4082 reported as a Live Voice or Other. Received on March 28, 2025 at 4:15 AM.

Anonymous User from Arvada, Colorado

January 3, 2025 at 2:42 PM

303-823-4734 reported as a Robocall. Received on July 19, 2024 at 1:12 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Centennial, Colorado

November 4, 2024 at 5:13 PM

303-823-4754 reported as a Live Voice or Other. Received on November 4, 2024 at 3:11 PM.

Anonymous User from Loveland, Colorado

July 29, 2024 at 10:16 AM

303-823-6956 reported as a Robocall. Received on July 26, 2024 at 5:34 PM.
Call for Dropped call or no message

Anonymous User from , CO

June 13, 2024 at 3:13 PM

303-823-4772 reported as a Robocall. Received on June 13, 2024 at 12:00 AM.
Call for No Subject Provided

Anonymous User from Denver, Colorado

April 18, 2024 at 5:27 PM

303-823-4721 reported as a Robocall. Received on April 18, 2024 at 2:35 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Dallas, Georgia

February 15, 2024 at 6:10 PM

303-823-4313 reported as a Robocall. Received on February 2, 2024 at 12:00 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Thornton, Colorado

February 14, 2024 at 3:16 PM

303-823-4127 reported as a Live Voice or Other. Received on February 14, 2024 at 1:06 PM.

Anonymous User from Centennial, Colorado

November 10, 2023 at 11:46 AM

303-823-4332 reported as a Live Voice or Other. Received on November 10, 2023 at 9:41 AM.

Anonymous User from , GA

November 6, 2023 at 9:27 AM

303-823-5489 reported as a Live Voice or Other. Received on November 6, 2023 at 9:11 AM.
Call for Dropped call or no message

Anonymous User from , GA

November 6, 2023 at 9:22 AM

303-823-5489 reported as a Robocall. Received on November 6, 2023 at 9:13 AM.

Anonymous User from Denver, Colorado

October 30, 2023 at 7:27 PM

303-823-6582 reported as a unwanted call. Received on October 30, 2023 at 5:24 PM.

Anonymous User from , CA

September 11, 2023 at 2:00 PM

303-823-5762 reported as a Live Voice or Other. Received on June 17, 2023 at 1:41 PM.
Call for No Subject Provided

Anonymous User from , CO

August 15, 2023 at 11:38 AM

303-823-9561 reported as a Robocall. Received on August 15, 2023 at 9:25 AM.
Call for Dropped call or no message

Anonymous User from Aurora, Colorado

July 6, 2023 at 9:18 AM

303-823-1685 reported as a Robocall. Received on July 5, 2023 at 12:11 PM.
Call for No Subject Provided

Anonymous User from Lyons, Colorado

March 9, 2023 at 5:38 PM

303-823-1231 reported as a Live Voice or Other. Received on March 9, 2023 at 3:30 AM.
Call for Medical & prescriptions

Anonymous User from Boulder, Colorado

December 3, 2022 at 1:13 AM

303-823-4981 reported as a Live Voice or Other. Received on September 28, 2022 at 2:51 PM.
Call for Medical & prescriptions

Anonymous User from Boulder, Colorado

December 3, 2022 at 1:04 AM

303-823-4981 reported as a Live Voice or Other. Received on October 19, 2022 at 12:02 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Denver, Colorado

October 19, 2022 at 4:03 PM

303-823-4708 reported as a Robocall. Received on October 15, 2022 at 9:06 AM.
Call for Dropped call or no message

Anonymous User from Riverside, California

October 19, 2022 at 2:19 PM

303-823-4546 reported as a Live Voice or Other. Received on October 19, 2022 at 10:28 AM.
Call for Energy, solar, & utilities

Anonymous User from , CO

July 27, 2022 at 7:37 PM

303-823-4666 reported as a Live Voice or Other. Received on July 27, 2022 at 9:40 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

July 15, 2022 at 1:45 AM

303-823-4666 reported as a Live Voice or Other. Received on July 13, 2022 at 10:43 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

July 15, 2022 at 1:45 AM

303-823-4666 reported as a Live Voice or Other. Received on July 13, 2022 at 1:45 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

June 30, 2022 at 7:56 AM

303-823-8056 reported as a Robocall. Received on June 29, 2022 at 9:03 AM.
Call for Medical & prescriptions

Anonymous User from , CO

June 22, 2022 at 12:35 PM

303-823-6004 reported as a Live Voice or Other. Received on June 22, 2022 at 10:33 AM.
Call for Medical & prescriptions

Anonymous User from , CO

June 20, 2022 at 2:42 PM

303-823-4666 reported as a Live Voice or Other. Received on June 20, 2022 at 10:16 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

June 15, 2022 at 5:38 PM

303-823-4666 reported as a Live Voice or Other. Received on June 15, 2022 at 1:10 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

June 9, 2022 at 8:59 PM

303-823-4666 reported as a Live Voice or Other. Received on June 9, 2022 at 2:10 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

June 3, 2022 at 1:05 AM

303-823-4666 reported as a Live Voice or Other. Received on May 31, 2022 at 8:32 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

June 1, 2022 at 5:49 PM

303-823-4708 reported as a Robocall. Received on May 24, 2022 at 2:18 PM.
Call for Dropped call or no message

Anonymous User from , CO

May 27, 2022 at 7:05 PM

303-823-4666 reported as a Live Voice or Other. Received on May 27, 2022 at 12:16 PM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from Aurora, CO

September 7, 2021 at 5:21 PM

303-823-4351 reported as a Live Voice. Received on September 7, 2021 at 11:23 AM.
Unwanted call for unknown
Contacted via Wired

Anonymous User from Westminster, CO

September 30, 2020 at 3:48 PM

303-823-4708 reported as a Live Voice. Received on September 30, 2020 at 9:09 AM.
Unwanted call for unknown
Contacted via Wired

Anonymous User from , CO

February 18, 2017 at 2:27 PM

None reported as a Live Voice. Received on February 18, 2017 at 12:00 AM.
Unwanted call for unknown
Caller ID indicated they called from 303-823-4073
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CO

May 17, 2016 at 8:16 PM

reported as a Prerecorded Voice. Received on May 17, 2016 at 12:55 PM.
Robocall for unknown
Caller ID indicated they called from 303-823-0822
Contacted via Wired

Anonymous User from , CO

October 28, 2015 at 10:51 PM

reported as a Live Voice. Received on October 28, 2015 at 3:30 PM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-823-4944
Contacted via Wired

Anonymous User from , CO

September 24, 2015 at 9:13 PM

reported as a Live Voice. Received on September 24, 2015 at 2:00 PM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-823-4944
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CO

September 15, 2015 at 7:48 PM

reported as a Abandoned Calls. Received on September 15, 2015 at 9:57 AM.
Robocall for unknown
Caller ID indicated they called from 303-823-4944
Contacted via Wired

Anonymous User from , CO

September 8, 2015 at 11:00 PM

reported as a Prerecorded Voice. Received on September 8, 2015 at 12:32 PM.
Robocall for unknown
Caller ID indicated they called from 303-823-4944
Contacted via Wired

Anonymous User from , NV

June 20, 2015 at 10:31 AM

reported as a Live Voice. Received on June 19, 2015 at 3:04 PM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-823-2336
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from , CO

June 8, 2015 at 4:14 PM

reported as a Live Voice. Received on June 7, 2015 at 8:47 PM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-823-5068
Contacted via Wired

Anonymous User from , CO

May 28, 2015 at 6:39 PM

reported as a Live Voice. Received on May 28, 2015 at 12:00 AM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-823-4813
Contacted via Wired

Anonymous User from , CO

May 14, 2015 at 1:38 AM

303-823-4813 reported as a Autodialed Live Voice Call. Received on May 13, 2015 at 5:00 PM.
Robocall for unknown
Contacted via Wired

Anonymous User from , CO

February 16, 2015 at 9:21 PM

reported as a Live Voice. Received on February 16, 2015 at 12:52 PM.
Telemarketing (including do not call and spoofing) for unknown
Caller ID indicated they called from 303-823-1306
Contacted via Wired

Most 'popular' numbers on this prefix:

303-823-0XXX: 303-823-0800 | 303-823-0808 | 303-823-0820 | 303-823-0822 | 303-823-0825 | 303-823-0888 |
303-823-1XXX: 303-823-1000 | 303-823-1001 | 303-823-1003 | 303-823-1212 | 303-823-1233 | 303-823-1234 | 303-823-1236 | 303-823-1262 | 303-823-1300 | 303-823-1303 | 303-823-1308 | 303-823-1331 | 303-823-1600 | 303-823-1608 | 303-823-1647 | 303-823-1680 | 303-823-1683 | 303-823-1688 |
303-823-2XXX: 303-823-2000 | 303-823-2006 | 303-823-2007 | 303-823-2052 | 303-823-2053 | 303-823-2054 | 303-823-2300 | 303-823-2345 | 303-823-2360 | 303-823-2362 | 303-823-2369 | 303-823-2400 | 303-823-2411 | 303-823-2414 | 303-823-2417 | 303-823-2434 | 303-823-2447 |
303-823-3XXX: 303-823-3000 | 303-823-3030 | 303-823-3033 | 303-823-3038 | 303-823-3062 |
303-823-4XXX: 303-823-4000 | 303-823-4052 | 303-823-4062 | 303-823-4070 | 303-823-4077 | 303-823-4078 | 303-823-4100 | 303-823-4120 | 303-823-4123 | 303-823-4125 | 303-823-4191 | 303-823-4300 | 303-823-4333 | 303-823-4350 | 303-823-4357 | 303-823-4500 | 303-823-4508 | 303-823-4540 | 303-823-4543 | 303-823-4545 | 303-823-4600 | 303-823-4650 | 303-823-4660 | 303-823-4661 | 303-823-4666 | 303-823-4700 | 303-823-4770 | 303-823-4771 | 303-823-4777 | 303-823-4800 | 303-823-4810 | 303-823-4811 | 303-823-4815 | 303-823-4888 | 303-823-4900 | 303-823-4980 | 303-823-4987 | 303-823-4989 | 303-823-4997 | 303-823-4998 |
303-823-5XXX: 303-823-5000 | 303-823-5001 | 303-823-5003 | 303-823-5060 | 303-823-5062 | 303-823-5067 | 303-823-5300 | 303-823-5320 | 303-823-5330 | 303-823-5340 | 303-823-5343 | 303-823-5345 | 303-823-5600 | 303-823-5606 | 303-823-5650 | 303-823-5655 | 303-823-5656 | 303-823-5700 | 303-823-5701 | 303-823-5760 | 303-823-5761 | 303-823-5767 | 303-823-5777 | 303-823-5800 | 303-823-5801 | 303-823-5808 | 303-823-5820 | 303-823-5850 |
303-823-6XXX: 303-823-6000 | 303-823-6001 | 303-823-6003 | 303-823-6008 | 303-823-6020 | 303-823-6060 | 303-823-6200 | 303-823-6202 | 303-823-6210 | 303-823-6211 | 303-823-6212 | 303-823-6220 | 303-823-6500 | 303-823-6501 | 303-823-6550 | 303-823-6580 | 303-823-6583 | 303-823-6588 | 303-823-6600 | 303-823-6620 | 303-823-6621 | 303-823-6622 | 303-823-6651 | 303-823-6660 | 303-823-6900 | 303-823-6950 | 303-823-6951 | 303-823-6959 | 303-823-6998 |
303-823-7XXX: 303-823-7200 | 303-823-7240 | 303-823-7244 | 303-823-7247 | 303-823-7257 | 303-823-7258 |
303-823-8XXX: 303-823-8000 | 303-823-8007 | 303-823-8009 | 303-823-8050 | 303-823-8052 | 303-823-8053 | 303-823-8100 | 303-823-8106 | 303-823-8108 | 303-823-8146 | 303-823-8188 | 303-823-8189 | 303-823-8200 | 303-823-8207 | 303-823-8250 | 303-823-8255 | 303-823-8258 | 303-823-8300 | 303-823-8303 | 303-823-8310 | 303-823-8311 | 303-823-8315 | 303-823-8320 |
303-823-9XXX: 303-823-9100 | 303-823-9110 | 303-823-9190 | 303-823-9191 | 303-823-9195 | 303-823-9197 | 303-823-9500 | 303-823-9550 | 303-823-9560 | 303-823-9565 | 303-823-9569 | 303-823-9601 | 303-823-9630 | 303-823-9635 | 303-823-9639 | 303-823-9650 | 303-823-9660 |