go
mx1.320.cn, mx.chinalj.com, mx.wel-link.com and mx.hongyuangg.com point to 218.85.137.73.

mx1.320.cn
a records
 
+ 218.85.137.73 218.85.0.0/16 AS4134 mx1.cnm.cn
+ --- mx1.cnm.cn

mx.chinalj.com
cname records
mx1.cnm.cn
+ 218.85.137.73 218.85.0.0/16 AS4134 -
+ --- -

mx.hongyuangg.com
cname records
mx1.cnm.cn
+ 218.85.137.73 218.85.0.0/16 AS4134 -
+ --- -

mx.wel-link.com
cname records
mx1.cnm.cn
+ 218.85.137.73 218.85.0.0/16 AS4134 -
+ --- -

mx1.cnm.cn
ptr records
 
+ 218.85.137.73 218.85.0.0/16 AS4134 -
+ --- -
ip numbers of host
218.85.137.73
ptrs of ip numbers
mx1.cnm.cn
hostnames sharing ip with a-records
mx.chinalj.com
mx.hongyuangg.com
mx.wel-link.com
mx1.320.cn
domains using this as mailserver
320.cn
chinalj.com
hongyuangg.com
wel-link.com