039 is not a country code. Numbers inside a country start like this: Kyivstar (Ukraine), Chanthaburi/Trat (Thailand), Pec (Serbia), Skikda (Algeria) 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 |
|---|---|---|
 Kyivstar · Ukraine | +380 39 … | 039 … |
 Chanthaburi/Trat · Thailand | +66 39 … | 039 … |
 Pec · Serbia | +381 39 … | 039 … |
 Skikda · Algeria | +213 39 … | 039 … |
 West Herzegovina Canton · Bosnia & Herzegovina | +387 39 … | 039 … |
 Bodrovo · Bulgaria | +359 39 … | 039 … |
| Brod · Bulgaria | +359 39 … | 039 … |
| Chernogorovo, Hask. · Bulgaria | +359 39 … | 039 … |
| 15 more in Bulgaria | ||
 Upper West Region · Ghana | +233 39 … | 039 … |
| Wa · Ghana | +233 39 … | 039 … |
 Gjakova · Kosovo | +383 39 … | 039 … |
| Peja · Kosovo | +383 39 … | 039 … |
 Blueline · Madagascar | +261 39 … | 039 … |
 Monaco Telecom · Monaco | +377 39 … | 039 … |
 Yby Ja'U · Paraguay | +595 39 … | 039 … |
 Eastern Pondoland/Port Shepstone/Southern Coast of KwaZulu Natal · South Africa | +27 39 … | 039 … |
| Vodacom · South Africa | +27 39 … | 039 … |
 Chatsworth · Zimbabwe | +263 39 … | 039 … |
| Gutu · Zimbabwe | +263 39 … | 039 … |
| Jerera · Zimbabwe | +263 39 … | 039 … |
| 7 more in Zimbabwe | ||
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.