0415 is not a country code. Numbers inside a country start like this: Zugdidi (Georgia), Dandong, Liaoning (China), Vodafone (Australia), Hörby (Sweden). The first digit 0 is the trunk prefix for domestic calls and is dropped from abroad.
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| Area or operator | From abroad | Inside the country |
|---|---|---|
 Zugdidi · Georgia | +995 415 … | 0415 … |
 Dandong, Liaoning · China | +86 415 … | 0415 … |
 Vodafone · Australia | +61 415 … | 0415 … |
 Hörby · Sweden | +46 415 … | 0415 … |
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.