0564 is not a country code. Numbers inside a country start like this: Krivoy Rog, Dnipro (Ukraine), Turkcell (Türkiye), Lu'an, Anhui (China), Nikël/Bubq, Kruje (Albania) 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 |
|---|---|---|
 Krivoy Rog, Dnipro · Ukraine | +380 564 … | 0564 … |
 Turkcell · Türkiye | +90 564 … | 0564 … |
 Lu'an, Anhui · China | +86 564 … | 0564 … |
 Nikël/Bubq, Kruje · Albania | +355 564 … | 0564 … |
 Sanggau · Indonesia | +62 564 … | 0564 … |
 Okazaki, Aichi · Japan | +81 564 … | 0564 … |
 Sysslebäck · Sweden | +46 564 … | 0564 … |
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.