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| Area or operator | From abroad | Inside the country |
|---|---|---|
 Osaka, Osaka · Japan | +81 6 … | 06 … |
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Veliky Novgorod · Russia | +7 816 … | 8816 … |
 Adrian, MO · United States | +1 816 … | 1816 … |
| Belton, MO · United States | +1 816 … | 1816 … |
| Blue Springs, MO · United States | +1 816 … | 1816 … |
| 26 more in United States | ||
 Mianyang, Sichuan · China | +86 816 … | 0816 … |
 Tumkur, Karnataka · India | +91 816 … | 0816 … |
 Indosat Ooredoo Hutchison · Indonesia | +62 816 … | 0816 … |
 MTN · Nigeria | +234 816 … | 0816 … |
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.