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| Area or operator | From abroad | Inside the country |
|---|---|---|
 Silknet · Georgia | +995 530 … | 0530 … |
 Alturas, CA · United States | +1 530 … | 1530 … |
| Anderson, CA · United States | +1 530 … | 1530 … |
| Arbuckle, CA · United States | +1 530 … | 1530 … |
| 60 more in United States | ||
 Heze, Shandong · China | +86 530 … | 0530 … |
 Mellerud · Sweden | +46 530 … | 0530 … |
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.