Have the full number? Check it in the number lookup.
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Belford Roxo - RJ · Brazil | +55 21 … | 021 … |
| Cachoeiras de Macacu - RJ · Brazil | +55 21 … | 021 … |
| Claro · Brazil | +55 21 … | 021 … |
| 28 more in Brazil | ||
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Herzberg am Harz · Germany | +49 5521 … | 05521 … |
 Bansgaon/Barhal Ganj, Uttar Pradesh · India | +91 5521 … | 05521 … |
 Saidpur/Syedpur · Bangladesh | +880 5521 … | 05521 … |
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.