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303-304

You are reviewing the Area Code (NPA/NXX) report for 303-304. Did you mean to search the SMS short code 303304?

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Phone LookupTop ComplaintsArea CodesNPA-NXXiMessage
Examples: 206-739-5800, 206, 206-739, 48369
Raw Number303304
Basic Format303-304
NPA (Area Code)303
NXX304

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
303-304-0XXX6010NEW CINGULAR WIRELESS PCS, LLCFORTLUPTONAS11/24/2004FORT LUPTONCOWE01/09/2005
303-304-1XXX6010NEW CINGULAR WIRELESS PCS, LLCFORTLUPTONAS11/24/2004FORT LUPTONCOWE01/09/2005
303-304-2XXX5562METROPCS, INC.FORTLUPTONAS12/06/2004FORT LUPTONCOWE01/14/2005
303-304-3XXX6567CELLCO PARTNERSHIP DBA VERIZON WIRELESS - COFORTLUPTONAS07/22/2011FORT LUPTONCOWE08/22/2011
303-304-4XXX6567CELLCO PARTNERSHIP DBA VERIZON WIRELESS - COFORTLUPTONAS02/09/2005FORT LUPTONCOWE03/11/2005
303-304-5XXX6529T-MOBILE USA, INC.FORTLUPTONAS05/20/2005FORT LUPTONCOWE06/19/2005
303-304-6XXX6010NEW CINGULAR WIRELESS PCS, LLCFORTLUPTONAS06/13/2005FORT LUPTONCOWE07/11/2005
303-304-7XXX6010NEW CINGULAR WIRELESS PCS, LLCFORTLUPTONAS09/16/2005FORT LUPTONCOWE10/16/2005
303-304-8XXX5562METROPCS, INC.FORTLUPTONAS10/12/2005FORT LUPTONCOWE11/11/2005
303-304-9XXX6010NEW CINGULAR WIRELESS PCS, LLCFORTLUPTONAS11/30/2005FORT LUPTONCOWE12/12/2005
303-304-XXXX6010NEW CINGULAR WIRELESS PCS, LLCFORTLUPTONAS11/18/2004FORT LUPTONCO

Business/Government Phones on the 303-304 Prefix

PhoneNameAddress
303-304-0784Superior Mile High Plumbing
303-304-0816Retro Repair Resale
303-304-1828Tools & Time Home Services
303-304-2070Omega Paint and Specialty Finishes, Inc.
303-304-7924Red Earth Tree Company
303-304-9557Tightlines Alaska
303-304-1159LIFE Fellowship of Frederick451 Oak Street Frederick 80530 US
303-304-3758The GardensUS
303-304-9523Hong Kong Spa4221 E Mississippi Ave Glendale 80246 US

Reports

Anonymous User from , CO

February 24, 2026 at 1:33 PM

303-304-7780 reported as a Live Voice or Other. Received on February 24, 2026 at 1:31 PM.

Anonymous User from Westminster, Colorado

July 30, 2024 at 1:49 PM

303304755 reported as a Robocall. Received on July 30, 2024 at 7:28 PM.

Anonymous User from Westminster, Colorado

July 30, 2024 at 12:43 PM

303-304-7555 reported as a Robocall. Received on July 30, 2024 at 6:39 PM.
Call for Dropped call or no message

Anonymous User from Corpus Christi, TX

July 1, 2024 at 6:50 PM

303-304-4450 reported as a Text Message. Received on July 1, 2024 at 12:00 AM.
Unwanted call for unknown
Contacted via Wireless (cell phone/other mobile device)

Anonymous User from Roselle, Illinois

March 20, 2024 at 12:05 PM

303-304-1508 reported as a Live Voice or Other. Received on March 19, 2024 at 12:00 AM.
Call for Computer & technical support

Anonymous User from Santa Rosa, California

February 3, 2024 at 9:16 PM

303-304-3787 reported as a Live Voice or Other. Received on February 2, 2024 at 8:29 AM.
Call for Calls pretending to be government, businesses, or family and friends

Anonymous User from , CO

January 4, 2023 at 5:48 PM

303-304-2674 reported as a unwanted call. Received on January 2, 2023 at 12:00 PM.

Anonymous User from , CO

January 4, 2023 at 5:47 PM

303-304-3009 reported as a unwanted call. Received on January 3, 2023 at 8:00 AM.

Anonymous User from , CO

January 4, 2023 at 5:46 PM

303-304-1680 reported as a unwanted call. Received on January 4, 2023 at 3:46 PM.

Anonymous User from Boulder, CO

June 7, 2021 at 6:43 PM

None reported as a Live Voice. Received on June 7, 2021 at 9:13 AM.
Unwanted call for unknown
Caller ID indicated they called from 303-304-8943
Contacted via Wireless (cell phone/other mobile device)

Most 'popular' numbers on this prefix:

303-304-0XXX: 303-304-0726 | 303-304-0771 | 303-304-0773 | 303-304-0781 | 303-304-0783 | 303-304-0788 | 303-304-0811 | 303-304-0816 | 303-304-0818 | 303-304-0832 | 303-304-0834 | 303-304-0866 |
303-304-1XXX: 303-304-1000 | 303-304-1001 | 303-304-1003 | 303-304-1020 | 303-304-1022 | 303-304-1024 | 303-304-1400 | 303-304-1409 | 303-304-1431 | 303-304-1440 | 303-304-1441 | 303-304-1447 | 303-304-1500 | 303-304-1501 | 303-304-1508 | 303-304-1509 | 303-304-1547 | 303-304-1583 | 303-304-1600 | 303-304-1647 | 303-304-1662 | 303-304-1680 | 303-304-1683 | 303-304-1688 | 303-304-1800 | 303-304-1822 | 303-304-1823 | 303-304-1824 | 303-304-1877 |
303-304-2XXX: 303-304-2000 | 303-304-2007 | 303-304-2008 | 303-304-2070 | 303-304-2077 | 303-304-2079 | 303-304-2200 | 303-304-2222 | 303-304-2223 | 303-304-2224 | 303-304-2252 | 303-304-2262 | 303-304-2500 | 303-304-2501 | 303-304-2508 | 303-304-2600 | 303-304-2661 | 303-304-2662 | 303-304-2670 | 303-304-2677 | 303-304-2678 | 303-304-2900 | 303-304-2980 | 303-304-2983 | 303-304-2988 | 303-304-2992 | 303-304-2998 |
303-304-3XXX: 303-304-3000 | 303-304-3003 | 303-304-3008 | 303-304-3030 | 303-304-3062 | 303-304-3600 | 303-304-3603 | 303-304-3608 | 303-304-3662 | 303-304-3668 | 303-304-3776 | 303-304-3777 | 303-304-3778 | 303-304-3780 | 303-304-3783 | 303-304-3788 |
303-304-4XXX: 303-304-4400 | 303-304-4404 | 303-304-4409 | 303-304-4450 | 303-304-4454 | 303-304-4455 | 303-304-4820 | 303-304-4822 | 303-304-4823 | 303-304-4887 | 303-304-4888 | 303-304-4889 |
303-304-5XXX: 303-304-5160 | 303-304-5166 | 303-304-5168 | 303-304-5600 | 303-304-5678 | 303-304-5695 | 303-304-5696 | 303-304-5699 |
303-304-7XXX: 303-304-7500 | 303-304-7506 | 303-304-7550 | 303-304-7552 | 303-304-7557 | 303-304-7700 | 303-304-7777 | 303-304-7778 | 303-304-7786 | 303-304-7787 | 303-304-7788 | 303-304-7920 | 303-304-7923 | 303-304-7929 | 303-304-7993 | 303-304-7997 | 303-304-7998 |
303-304-8XXX: 303-304-8437 | 303-304-8461 | 303-304-8463 | 303-304-8466 | 303-304-8485 | 303-304-8487 |
303-304-9XXX: 303-304-9000 | 303-304-9003 | 303-304-9008 | 303-304-9060 | 303-304-9062 | 303-304-9069 | 303-304-9161 | 303-304-9166 | 303-304-9168 | 303-304-9176 | 303-304-9177 | 303-304-9178 | 303-304-9198 | 303-304-9500 | 303-304-9550 | 303-304-9553 | 303-304-9559 |