Annan was renamed to Zhennan for a brief period from 757 to 760 before reverting to Annan.

After coming under attack by Nanzhao in 864, the Annan Protectorate was renamed Jinghai Military Command upon its reconquest by Gao Pian in 866. Today the same area is sometimes known as Tonkin , the "eastern capital" of Dai Viet. Locally, the area is known as Bac Ky ??,