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| Area or operator | From abroad | Inside the country |
|---|---|---|
 Afton, OK · United States | +1 918 … | 1918 … |
| Bartlesville, OK · United States | +1 918 … | 1918 … |
| Beggs, OK · United States | +1 918 … | 1918 … |
| 63 more in United States | ||
 Saumlaku · Indonesia | +62 918 … | 0918 … |
 Claro · Peru | +51 918 … | 0918 … |
 Smart · Philippines | +63 918 … | 0918 … |
 Orange · Slovakia | +421 918 … | 0918 … |
 Norsjö · Sweden | +46 918 … | 0918 … |
 Taiwan Mobile · Taiwan | +886 918 … | 0918 … |
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.