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Area Code 303

There are 800 phone number prefixes within area code 303. Additionally, there are more than 8,000 phone numbers in this area code that have received at least one user report. The location of calls from area code 303 is Colorado, USA. Most numbers in this area code are in US Mountain time, where the time is currently 12:24:11 PM on March 2, 2024.
 
Choose a phone number from the list below to browse user reports for . You can also use the search box above to search for user reports about any phone number, or to file a report about any phone number.

Prefix City / State Primary Telco
303-500 Hudson, CO Level 3 Communications, Llc - Co
303-501 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-502 Fort Lupton, CO Cellco Partnership Dba Verizon Wireless - Co
303-503 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-504 Denver, CO Qwest Corporation
303-505 Denver, CO Sprint Spectrum, L.p.
303-506 Fort Lupton, CO New Cingular Wireless Pcs, Llc
303-507 Denver, CO Sprint Spectrum, L.p.
303-508 Denver, CO American Messaging Services, Llc
303-509 Denver, CO American Messaging Services, Llc
303-510 Denver, CO American Messaging Services, Llc
303-511 Colorado
303-512 Denver, CO Qwest Corporation
303-513 Denver, CO New Cingular Wireless Pcs, Llc
303-514 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-515 Denver, CO Onvoy, Llc - Co
303-516 Denver, CO Qwest Corporation
303-517 Denver, CO New Cingular Wireless Pcs, Llc
303-518 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-519 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-520 Denver, CO Sprint Spectrum, L.p.
303-521 Denver, CO Sprint Spectrum, L.p.
303-522 Denver, CO Sprint Spectrum, L.p.
303-523 Denver, CO T-mobile Usa, Inc.
303-524 Denver, CO Teleport Communications America, Llc - Co
303-525 Denver, CO Sprint Spectrum, L.p.
303-526 Denver, CO Qwest Corporation
303-527 Denver, CO Qwest Corporation
303-528 Denver, CO American Messaging Services, Llc
303-529 Denver, CO Onvoy, Llc - Co
303-530 Denver, CO Qwest Corporation
303-531 Denver, CO Mcimetro Access Transmission Services Llc
303-532 Longmont, CO Mcleodusa Telecommunication Services, Inc. - Co
303-533 Denver, CO Qwest Corporation
303-534 Denver, CO Qwest Corporation
303-535 Fort Lupton, CO Onvoy, Llc - Co
303-536 Hudson, CO Qwest Corporation
303-537 Denver, CO Teleport Communications America, Llc - Co
303-538 Denver, CO Qwest Corporation
303-539 Denver, CO Xo Colorado, Llc
303-540 Denver, CO Usa Mobility Wireless, Inc.
303-541 Denver, CO Qwest Corporation
303-542 Denver, CO Mcimetro Access Transmission Services Llc
303-543 Denver, CO Qwest Corporation
303-544 Denver, CO Qwest Corporation
303-545 Denver, CO Qwest Corporation
303-546 Denver, CO Qwest Corporation
303-547 Denver, CO Global Crossing Local Services, Inc. - Co
303-548 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-549 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-550 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-551 Denver, CO Mcimetro Access Transmission Services Llc
303-552 Denver, CO Global Crossing Local Services, Inc. - Co
303-553 Denver, CO Usa Mobility Wireless, Inc.
303-554 Denver, CO Qwest Corporation
303-555 Denver, CO Qwest Corporation
303-556 Denver, CO Qwest Corporation
303-557 Denver, CO Global Crossing Local Services, Inc. - Co
303-558 Denver, CO Global Crossing Local Services, Inc. - Co
303-559 Denver, CO American Messaging Services, Llc
303-560 Denver, CO Usa Mobility Wireless, Inc.
303-561 Denver, CO Qwest Corporation
303-562 Denver, CO Global Crossing Local Services, Inc. - Co
303-563 Denver, CO Level 3 Communications, Llc - Co
303-564 Denver, CO T-mobile Usa, Inc.
303-565 Denver, CO Onvoy, Llc - Co
303-566 Denver, CO Mcimetro Access Transmission Services Llc
303-567 Denver, CO Qwest Corporation
303-568 Denver, CO Teleport Communications America, Llc - Co
303-569 Georgetown, CO Qwest Corporation
303-570 Denver, CO New Cingular Wireless Pcs, Llc
303-571 Denver, CO Qwest Corporation
303-572 Denver, CO Qwest Corporation
303-573 Denver, CO Qwest Corporation
303-574 Denver, CO Qwest Corporation
303-575 Denver, CO Qwest Corporation
303-576 Denver, CO Qwest Corporation
303-577 Denver, CO Electric Lightwave Llc Dba Allstream
303-578 Keenesburg, CO Level 3 Communications, Llc - Co
303-579 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-580 Denver, CO American Messaging Services, Llc
303-581 Denver, CO Qwest Corporation
303-582 Denver, CO Qwest Corporation
303-583 Denver, CO Teleport Communications America, Llc - Co
303-584 Denver, CO Qwest Corporation
303-585 Denver, CO Qwest Corporation
303-586 Denver, CO Level 3 Communications, Llc - Co
303-587 Denver, CO Sprint Spectrum, L.p.
303-588 Denver, CO New Cingular Wireless Pcs, Llc
303-589 Denver, CO New Cingular Wireless Pcs, Llc
303-590 Denver, CO Level 3 Communications, Llc - Co
303-591 Denver, CO Sprint Spectrum, L.p.
303-592 Denver, CO Qwest Corporation
303-593 Denver, CO Teleport Communications America, Llc - Co
303-594 Denver, CO Cellco Partnership Dba Verizon Wireless - Co
303-595 Denver, CO Qwest Corporation
303-596 Denver, CO Sprint Spectrum, L.p.
303-597 Denver, CO Electric Lightwave Llc Dba Allstream
303-598 Denver, CO Sprint Spectrum, L.p.
303-599 Denver, CO Usa Mobility Wireless, Inc.

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