0591 is not a country code. Numbers inside a country start like this: MagtiCom (Georgia), Lingen (Ems) (Germany), Fuzhou, Fujian (China), Moradabad, Uttar Pradesh (India) 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 |
|---|---|---|
 MagtiCom · Georgia | +995 591 … | 0591 … |
 Lingen (Ems) · Germany | +49 591 … | 0591 … |
 Fuzhou, Fujian · China | +86 591 … | 0591 … |
 Moradabad, Uttar Pradesh · India | +91 591 … | 0591 … |
 Emmen · Netherlands | +31 591 … | 0591 … |
 Përrenjas, Librazhd · Albania | +355 591 … | 0591 … |
 Lalmonirhat · Bangladesh | +880 591 … | 0591 … |
 Hällefors-Grythyttan · Sweden | +46 591 … | 0591 … |
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.