0771 is not a country code. Numbers inside a country start like this: Donaueschingen (Germany), Nanning, Guangxi (China), Tanjung Pinang (Indonesia), Asiacell (Iraq) and others. The first digit 0 is the trunk prefix for domestic calls and is dropped from abroad.
Have the full number? Check it in the number lookup.
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Donaueschingen · Germany | +49 771 … | 0771 … |
 Nanning, Guangxi · China | +86 771 … | 0771 … |
| Nanning/Chongzuo, Guangxi · China | +86 771 … | 0771 … |
 Tanjung Pinang · Indonesia | +62 771 … | 0771 … |
 Asiacell · Iraq | +964 771 … | 0771 … |
 Kameoka, Kyoto · Japan | +81 771 … | 0771 … |
| Sonobe, Kyoto · Japan | +81 771 … | 0771 … |
 Yas · Tanzania | +255 771 … | 0771 … |
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.