Area Code 307 - Casper, WY

Below is the information for Area Code 307
General Information for Area Code 307
Country United States
State/Province Wyoming
Major City Casper
Time Zone Mountain (UTC-07:00)

Phone directory of numbers beginning with Area Code 307 Prefixes

Prefix Primary City County Phone Type
307-200 Jackson, WY Teton Landline
307-201 Jackson, WY Teton Landline
307-202 Powell, WY Park Cell Number
307-203 Jackson, WY Teton Cell Number
307-206 Lander, WY Fremont Landline
307-212 Rock Springs, WY Sweetwater Landline
307-213 Cody, WY Park Landline
307-214 Cheyenne, WY Laramie Cell Number
307-215 Casper, WY Carbon Landline
307-216 Manville, WY Niobrara Cell Number
307-217 Buffalo, WY Johnson Cell Number
307-220 Cheyenne, WY Laramie Cell Number
307-221 Cheyenne, WY Laramie Cell Number
307-222 Cheyenne, WY Laramie Landline
307-223 Laramie, WY Albany Landline
307-224 Casper, WY Carbon Landline
307-228 Unknown
307-230 Casper, WY Natrona Cell Number
307-231 Pinedale, WY Sublette Cell Number
307-232 Casper, WY Carbon Landline
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Location Details

Area code is a type of numbering scheme used in telecommunication. It divides the territories of its member countries, the code is a three-digit code. The digits 0 and 1 applied for central office codes. Other digits were applied into geographic areas of the service territory.

  • 200: easily recognizable code (ERC)
  • 201: New Jersey
  • 202: Washington, D.C.
  • 203: Connecticut
  • and so on.

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