0284 is not a country code. Numbers inside a country start like this: Goris, Syunik (Armenia), Edirne (Türkiye), Rubik, Mirditë (Albania), Pemalang (Indonesia) 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 |
|---|---|---|
 Goris, Syunik · Armenia | +374 284 … | 0284 … |
| Goris/Verishen, Syunik · Armenia | +374 284 … | 0284 … |
| Harzhis, Syunik · Armenia | +374 284 … | 0284 … |
| 4 more in Armenia | ||
 Edirne · Türkiye | +90 284 … | 0284 … |
 Rubik, Mirditë · Albania | +355 284 … | 0284 … |
 Pemalang · Indonesia | +62 284 … | 0284 … |
 Ashikaga, Tochigi · Japan | +81 284 … | 0284 … |
 Bolívar · Venezuela | +58 284 … | 0284 … |
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.