Have the full number? Check it in the number lookup.
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Dearborn, MI · United States | +1 313 … | 1313 … |
| Detroit, MI · United States | +1 313 … | 1313 … |
| Highland Park, MI · United States | +1 313 … | 1313 … |
| 4 more in United States | ||
 Zhangjiakou, Hebei · China | +86 313 … | 0313 … |
 Druskininkai · Lithuania | +370 313 … | 0313 … |
 Dieren · Netherlands | +31 313 … | 0313 … |
 Ballsh, Mallakastër · Albania | +355 313 … | 0313 … |
 Claro · Colombia | +57 313 … | 0313 … |
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.