An Prefecture

Anzhou or An Prefecture was a zhou (prefecture) in imperial China, centering on modern Anlu, Hubei, China. It existed (intermittently) from 550 until 1119, when the Song dynasty renamed it De'an Prefecture.

Geography
The administrative region of An Prefecture in the Tang dynasty was in modern central Hubei. It probably includes parts of modern:
 * Under the administration of Xiaogan:
 * Xiaogan
 * Anlu
 * Yingcheng
 * Yunmeng County
 * Xiaochang County
 * Under the administration of Suizhou:
 * Guangshui