016 is not a country code. Numbers inside a country start like this: Bangkok/Nonthaburi/Pathum Thani/Samut Prakan (Thailand), Leskovac (Serbia), Altinópolis - SP (Brazil). 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 |
|---|---|---|
 Bangkok/Nonthaburi/Pathum Thani/Samut Prakan · Thailand | +66 16 … | 016 … |
 Leskovac · Serbia | +381 16 … | 016 … |
 Altinópolis - SP · Brazil | +55 16 … | 016 … |
| Américo Brasiliense - SP · Brazil | +55 16 … | 016 … |
| Aramina - SP · Brazil | +55 16 … | 016 … |
| 75 more in Brazil | ||
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.