0550 is not a country code. Numbers inside a country start like this: Globalcell (Georgia), ALFA Telecom (Kyrgyzstan), Chuzhou, Anhui (China), Gotenba, Shizuoka (Japan) 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 |
|---|---|---|
 Globalcell · Georgia | +995 550 … | 0550 … |
| MagtiCom · Georgia | +995 550 … | 0550 … |
| Silknet · Georgia | +995 550 … | 0550 … |
 ALFA Telecom · Kyrgyzstan | +996 550 … | 0550 … |
 Chuzhou, Anhui · China | +86 550 … | 0550 … |
 Gotenba, Shizuoka · Japan | +81 550 … | 0550 … |
 Mauricio Jose Troche · Paraguay | +595 550 … | 0550 … |
 Kristinehamn · Sweden | +46 550 … | 0550 … |
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.