+8 1 stands for Japan, +82 stands for Korea, +84 stands for Viet Nam, +850 stands for North Korea, +852 stands for China and Hongkong, +853 stands for China and Macau, +855 stands for Cambodia, +856 stands for Laos and +86 stands for China.
+870 stands for Inmarsat“SNAC "? Satellite phone, +878 stands for global personal communication service, +880 stands for Bangladeshi, +88 1 stands for mobile satellite system, +882 stands for international network, and +886 stands for Taiwan Province province of China.
All numbers are prefix numbers, which means that these numbers are used to "dial" the destination country or special administrative region. Each country also has a prefix "dial-out" country. This prefix is called the international crown code.
Extended data:
According to the regulations, the 1 area is the North American number planning area, and the long-distance codes of these countries are 00 1, such as the United States and Canada. But the area code of Greenland is an exception, 00299.
Area 2 is an African number area, and the telephone area code of all African countries begins with 002. There are also some figures in other regions. Areas 3 and 4 are both European number areas, and most European countries use these two digits as codes.
Region 5 is the country code area of Mexico and Central and South America. Region 6 is the country code area of Southeast Asia and Oceania. Region 7 is a part of the code areas of Russia and the former Soviet Union.
Area 8 is the East Asia area and special service number. For example, the long distance area code of China is 0086. Region 9 is the country code area of West Asia, South Asia and the Middle East.
Baidu Encyclopedia-International Telephone Area Code
People's Network-How are the area codes of countries and regions arranged?