0212 is not a country code. Numbers inside a country start like this: Istanbul (Europe) (Türkiye), Solingen (Germany), Chinchwad, Maharashtra (India), Pukë (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 |
|---|---|---|
 Istanbul (Europe) · Türkiye | +90 212 … | 0212 … |
 Solingen · Germany | +49 212 … | 0212 … |
 Chinchwad, Maharashtra · India | +91 212 … | 0212 … |
 Pukë · Albania | +355 212 … | 0212 … |
 Jaffna · Sri Lanka | +94 212 … | 0212 … |
 Caracas/Miranda/Vargas · Venezuela | +58 212 … | 0212 … |
 Son La Province · Vietnam | +84 212 … | 0212 … |
 Ndola/Copperbelt and Luapula Provinces · Zambia | +260 212 … | 0212 … |
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.