Joke Collection Website - Blessing messages - What is the area code before sending text messages to American mobile phones? What about Japan?

What is the area code before sending text messages to American mobile phones? What about Japan?

If a service provider using China in China sends a short message to the number of a service provider using the United States in the United States, it should broadcast it before the other party's number: 00 1.

Similarly, to send a short message to a Japanese service provider in Japan, please add: 008 1.

The following appendices are prefix codes of major countries in the world: