CheyenneCasperLaramieWyoming (WY)
How to dial a 307 number from abroad
Calling Cheyenne from outside the United States? Dial the full number in international format — you don't need the US exit code, that's only for calls made from inside the US.
International format
A 307 number looks like this when dialed from anywhere in the world:
+1 307 XXX XXXX
Frequently asked questions
How do I call a Cheyenne number from abroad?
Dial + (or 00 from most countries), then 1 for the US, then 307, then the 7-digit local number. So a Cheyenne number reads as +1 307 XXXXXXX.
What other area codes serve Cheyenne?
Cheyenne is served only by area code 307 — no other code overlays this area.
How much does Hyallo charge to call area code 307?
Calls to Cheyenne landlines start at $0.02/min with Hyallo, and your first call is free. Mobile numbers in the same area code can cost more, since they're billed at the real carrier rate.