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| Area or operator | From abroad | Inside the country |
|---|---|---|
 Arkhangelsk · Russia | +7 818 … | 8818 … |
 Agoura Hills, CA · United States | +1 818 … | 1818 … |
| Burbank, CA · United States | +1 818 … | 1818 … |
| Calabasas, CA · United States | +1 818 … | 1818 … |
| 11 more in United States | ||
 Dazhou, Sichuan · China | +86 818 … | 0818 … |
 XL · Indonesia | +62 818 … | 0818 … |
 9mobile · Nigeria | +234 818 … | 0818 … |
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.