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| Area or operator | From abroad | Inside the country |
|---|---|---|
 Avon, IN · United States | +1 317 … | 1317 … |
| Bargersville, IN · United States | +1 317 … | 1317 … |
| Brownsburg, IN · United States | +1 317 … | 1317 … |
| 24 more in United States | ||
 Cangzhou, Hebei · China | +86 317 … | 0317 … |
 Wageningen · Netherlands | +31 317 … | 0317 … |
 Movistar · Colombia | +57 317 … | 0317 … |
If a number starts with +, the first 1–3 digits are the country code. If it starts with 0 (8 in Russia and Kazakhstan), it is a domestic number: an area or operator code follows, and from abroad the 0 or 8 is replaced with + and the country code. The same digits can mean different places, so where the call came from matters.