Where does Kunming landline call in the middle of the night?

It may be the special service number of the telecom operator, or it may be an internet phone, a mobile phone number, or even a device that can set its own display number.

The area code of Kunming, Yunnan is 087 1, also written as +087 1, 087 1-, (087 1), (087 1), ignoring the previous 0, also written as+87/kloc-.

Kunming, also known as Spring City, is a prefecture-level city, provincial capital, megacity and central city in central Yunnan, one of the important central cities in western China approved by the State Council, and an important tourist and commercial city in China.