Area Code 303

All Information about Area Code 303
General Information about Area Code 303
Country United States
State / Province / Territory Colorado
Major City Denver
Time Zone Mountain (UTC-07:00)

Active Prefixes in Area Code 303

Prefix Primary City County Phone Type
303-450 Denver Adams Landline
303-759 Denver Denver Landline
303-618 Denver Denver Wireless
303-706 Denver Denver Landline
303-441 Denver Denver Landline
303-605 Denver Denver Landline
303-549 Denver Denver Wireless
303-301 Denver Denver Landline
303-980 Denver Jefferson Landline
303-457 Denver Adams Landline
303-946 Denver Denver Wireless
303-854 Denver Denver Landline
303-701 Denver Denver Wireless
303-653 Denver Denver Landline
303-507 Denver Denver Wireless
303-337 Denver Denver Landline
303-932 Littleton Jefferson Landline
303-844 Denver Denver Landline
303-317 Aurora Adams Landline
303-943 Denver Denver -
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