Area code 720 was added as an overlay to code 303 on 1st June 1998. The particular code serves the State of Colorado. Overlays are added to existing area codes so that to provide people with telephone services more efficiently and resourcefully. Overlay areas share same geographical boundary and it is essential to dial the code even while making local phone calls. Area codes 303 and 720 are not the exceptions and it is mandatory to dial a ten-digit number so that to connect to exact destination. In overlay areas two customers can have same phone number but with different area codes.
Standard Time Zone for the State of Colorado is the Mountain Time Zone. The State of Colorado is currently entertained by following area codes:
|
|
|
|