0979 is not a country code. Numbers inside a country start like this: GeErmu, Qinghai (China), Nakatsu, Oita (Japan), Claro (Peru), Taiwan Mobile (Taiwan). 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 |
|---|---|---|
 GeErmu, Qinghai · China | +86 979 … | 0979 … |
 Nakatsu, Oita · Japan | +81 979 … | 0979 … |
 Claro · Peru | +51 979 … | 0979 … |
| Movistar · Peru | +51 979 … | 0979 … |
 Taiwan Mobile · Taiwan | +886 979 … | 0979 … |
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.