www.56.com is an alias for www.56.com.a.sohu.com.
www.56.com.a.sohu.com is an alias for gs.a.sohu.com.
gs.a.sohu.com is an alias for fhk.a.sohu.com.
fhk.a.sohu.com has address 13.75.75.123
fhk.a.sohu.com has address 52.175.9.163