Area Code 303 - Colorado
Every 303 prefix with its city and carrier. Got a specific number? Search it here.
Area code 303 serves Colorado (Mountain time zone) with 785 assigned prefixes. Major rate centers include Denver, Longmont, Fort Lupton, Deckers, Keenesburg, Allens Park-Lyons, Deer Trail, Georgetown. Received a call from a 303 number? Type the full number into the search box above to see its city, carrier, and community reports.
Prefixes in area code 303
| Prefix | City | State | Carrier |
|---|---|---|---|
| 303-808 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-809 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-810 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-812 | Denver | CO | QWEST CORPORATION |
| 303-813 | Denver | CO | QWEST CORPORATION |
| 303-814 | Denver | CO | QWEST CORPORATION |
| 303-815 | Denver | CO | INTERLINK ADV SVC DBA FORETHOUGHT.NET - CO |
| 303-816 | Deckers | CO | QWEST CORPORATION |
| 303-817 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-818 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-819 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-820 | Denver | CO | QWEST CORPORATION |
| 303-821 | Denver | CO | SPOK, INC. |
| 303-822 | Byers | CO | BIJOU TEL. COOP. ASSN., INC. |
| 303-823 | Allens Park-Lyons | CO | QWEST CORPORATION |
| 303-824 | Denver | CO | TELEPORT COMMUNICATIONS AMERICA, LLC - CO |
| 303-825 | Denver | CO | QWEST CORPORATION |
| 303-826 | Denver | CO | SPOK, INC. |
| 303-827 | Longmont | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-828 | Denver | CO | QWEST CORPORATION |
| 303-829 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-830 | Denver | CO | QWEST CORPORATION |
| 303-831 | Denver | CO | QWEST CORPORATION |
| 303-832 | Denver | CO | QWEST CORPORATION |
| 303-833 | Denver | CO | QWEST CORPORATION |
| 303-834 | Longmont | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-835 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-836 | Denver | CO | COMMUNICATIONS UNLIMITED |
| 303-837 | Denver | CO | QWEST CORPORATION |
| 303-838 | Deckers | CO | QWEST CORPORATION |
| 303-839 | Denver | CO | QWEST CORPORATION |
| 303-840 | Denver | CO | QWEST CORPORATION |
| 303-841 | Denver | CO | QWEST CORPORATION |
| 303-842 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-843 | Denver | CO | QWEST CORPORATION |
| 303-844 | Denver | CO | QWEST CORPORATION |
| 303-845 | Longmont | CO | TELEPORT COMMUNICATIONS AMERICA, LLC - CO |
| 303-846 | Denver | CO | QWEST CORPORATION |
| 303-847 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-848 | Longmont | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-849 | Roggen | CO | ROGGEN TEL. COOP. CO. |
| 303-850 | Denver | CO | QWEST CORPORATION |
| 303-851 | Denver | CO | SPOK, INC. |
| 303-852 | Denver | CO | SPOK, INC. |
| 303-853 | Denver | CO | QWEST CORPORATION |
| 303-854 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-855 | Denver | CO | SPOK, INC. |
| 303-856 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-857 | Fort Lupton | CO | QWEST CORPORATION |
| 303-858 | Denver | CO | QWEST CORPORATION |
| 303-859 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-860 | Denver | CO | QWEST CORPORATION |
| 303-861 | Denver | CO | QWEST CORPORATION |
| 303-862 | Denver | CO | COMCAST IP PHONE, LLC |
| 303-863 | Denver | CO | QWEST CORPORATION |
| 303-864 | Denver | CO | QWEST CORPORATION |
| 303-865 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-866 | Denver | CO | QWEST CORPORATION |
| 303-867 | Denver | CO | ILOKA, INC. DBA NEWCLOUD NETWORKS - CO |
| 303-868 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-869 | Denver | CO | QWEST CORPORATION |
| 303-870 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-871 | Denver | CO | QWEST CORPORATION |
| 303-872 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-873 | Denver | CO | QWEST CORPORATION |
| 303-874 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-875 | Denver | CO | T-MOBILE USA, INC. |
| 303-876 | Denver | CO | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 303-877 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-878 | Denver | CO | SPOK, INC. |
| 303-879 | Denver | CO | ONVOY, LLC - CO |
| 303-880 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-881 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-882 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-883 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-884 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-885 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-886 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-887 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-888 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-889 | Denver | CO | QWEST CORPORATION |
| 303-890 | Denver | CO | SPOK, INC. |
| 303-891 | Denver | CO | SPOK, INC. |
| 303-892 | Denver | CO | QWEST CORPORATION |
| 303-893 | Denver | CO | QWEST CORPORATION |
| 303-894 | Denver | CO | QWEST CORPORATION |
| 303-895 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-896 | Denver | CO | QWEST CORPORATION |
| 303-897 | Denver | CO | SPOK, INC. |
| 303-898 | Denver | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-899 | Denver | CO | QWEST CORPORATION |
| 303-900 | Georgetown | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-901 | Denver | CO | T-MOBILE USA, INC. |
| 303-902 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-903 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-904 | Denver | CO | QWEST CORPORATION |
| 303-905 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-906 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-907 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-908 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-909 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-910 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-912 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-913 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-914 | Denver | CO | QWEST CORPORATION |
| 303-915 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-916 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-917 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-918 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-919 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-920 | Denver | CO | QWEST CORPORATION |
| 303-921 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-922 | Denver | CO | QWEST CORPORATION |
| 303-923 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-924 | Denver | CO | QWEST CORPORATION |
| 303-925 | Denver | CO | QWEST CORPORATION |
| 303-926 | Denver | CO | QWEST CORPORATION |
| 303-927 | Denver | CO | TELEPORT COMMUNICATIONS AMERICA, LLC - CO |
| 303-928 | Denver | CO | MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
| 303-929 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-930 | Denver | CO | QWEST CORPORATION |
| 303-931 | Denver | CO | T-MOBILE USA, INC. |
| 303-932 | Denver | CO | QWEST CORPORATION |
| 303-933 | Denver | CO | QWEST CORPORATION |
| 303-934 | Denver | CO | QWEST CORPORATION |
| 303-935 | Denver | CO | QWEST CORPORATION |
| 303-936 | Denver | CO | QWEST CORPORATION |
| 303-937 | Denver | CO | QWEST CORPORATION |
| 303-938 | Denver | CO | QWEST CORPORATION |
| 303-939 | Denver | CO | QWEST CORPORATION |
| 303-940 | Denver | CO | QWEST CORPORATION |
| 303-941 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-942 | Denver | CO | TELEPORT COMMUNICATIONS AMERICA, LLC - CO |
| 303-943 | Denver | CO | SKYE TELECOM LLC DBA SKYETEL |
| 303-944 | Denver | CO | T-MOBILE USA, INC. |
| 303-945 | Denver | CO | COMCAST IP PHONE, LLC |
| 303-946 | Denver | CO | T-MOBILE USA, INC. |
| 303-947 | Denver | CO | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
| 303-948 | Denver | CO | QWEST CORPORATION |
| 303-949 | Denver | CO | T-MOBILE USA, INC. |
| 303-951 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-952 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-953 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-954 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-955 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-956 | Fort Lupton | CO | NEW CINGULAR WIRELESS PCS, LLC |
| 303-957 | Denver | CO | LEVEL 3 COMMUNICATIONS, LLC - CO |
| 303-960 | Denver | CO | T-MOBILE USA, INC. |
| 303-961 | Denver | CO | T-MOBILE USA, INC. |
| 303-962 | Denver | CO | ONVOY, LLC - CO |
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