Where is the landline starting from Chenzhou 6?

The cities with the prefix of 6 in Chenzhou landline are Guiyang, Jiahe, Yizhang, Linwu, Zixing, Rucheng, Anren, Yongxing, Guidong and Suxian. According to relevant public information, the fixed telephone area code of Chenzhou is 0735, and the telephone number 0735-6628 belongs to Chenzhou, Hunan Province. The areas under its jurisdiction are Guiyang, Jiahe, Yizhang, Linwu, Zixing, Rucheng, Anren, Yongxing, Guidong and Suxian.