0971 is the Qinghai area code.

The concept of area code:

Area code refers to the commonly used telephone division numbers in the administrative areas of major cities in the world. These numbers are mainly used for domestic and international long-distance telephone access. For example, the international dialing code of mainland China is 86, Beijing area code is 010, Guangzhou area code is 020, etc. When using domestic long-distance calls, dial 0 before the area code. It is worth mentioning that people often confuse the concept and mistakenly believe that there is a 0 in front of the area code itself. In other words, since 0 is the only domestic long-distance access code, it is often used in parallel with the following area code, so it has become a habit. In fact, when calling back to a certain city in China from abroad, the local international long-distance call access code is added after the Chinese country code 86, and there is no 0 before the area code of the city. For example, the area code of Chengdu should be 28, not 028.