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Area code 303 is the original area code of the NPA, as well as for the entire state, reduced in geographic extent over time. Area codes 720 and 983 were added in 1998 and 2022, respectively, to form an overlay complex for the area, meaning that the same geographic service area is served by all area codes and that ten-digit dialing is required ...
Time zone: UTC-7 • Summer : UTC-6 : ZIP Code [4] 80134. Area codes: 303 & 720: GNIS feature ID: 2805911 [1]
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Area code 303 is the original area code assigned to the entire state when the first nationwide telephone numbering plan was created in 1947. Today it only serves the greater Denver Metropolitan Area. Area codes 720 and 983 are overlay codes for today's 303 numbering plan area (NPA). Area code 719 serves Colorado Springs and southeastern Colorado.
The codes of the forms N00, N10, and N11, where N is 2 through 9, were not available for assignment as area codes at the time, but were reserved as special codes, [9] leaving a total of 136 possible combinations.
Time zone: UTC-7 • Summer : UTC-6 : ZIP Code [3] 80503, 80544. Area codes: 303 & 720: GNIS feature ID: 2408929 [1] Niwot is an unincorporated town, ...
Franktown is named for James Frank Gardner, a prospector who built a cabin 2.9 miles (4.7 km) north of the present location of Franktown in 1859 that became known as Frankstown in the Kansas Territory (also in the extralegal Jefferson Territory.) [5] [6] The Territory of Colorado was created on February 28, 1861, and the new territory created Douglas County on November 1, 1861, with Frankstown ...