Have the full number? Check it in the number lookup.
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Arizona · United States | +1 602 … | 1602 … |
| Glendale, AZ · United States | +1 602 … | 1602 … |
| Phoenix, AZ · United States | +1 602 … | 1602 … |
 Tele 2 · Lithuania | +370 602 … | 0602 … |
 Cali · Colombia | +57 602 … | 0602 … |
| Pasto · Colombia | +57 602 … | 0602 … |
 Vodafone · Romania | +40 602 … | 0602 … |
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.