Have the full number? Check it in the number lookup.
| Country | From abroad |
|---|---|
 Liechtenstein | +423 … |
| Area or operator | From abroad | Inside the country |
|---|---|---|
 Primorie Territory · Russia | +7 423 … | 8423 … |
 Xulo · Georgia | +995 423 … | 0423 … |
 Athens, TN · United States | +1 423 … | 1423 … |
| Benton, TN · United States | +1 423 … | 1423 … |
| Blountville, TN · United States | +1 423 … | 1423 … |
| 48 more in United States | ||
 Udhagamandalam, Tamil Nadu · India | +91 423 … | 0423 … |
 Optus · Australia | +61 423 … | 0423 … |
 Makale/Rantepao · Indonesia | +62 423 … | 0423 … |
 Lebap · Turkmenistan | +993 423 … | 8423 … |
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.