91.236.136.168
Reverse address entry: 168.136.236.91.in-addr.arpa
DNS Records 
PTRs120.webhost1.ru- Records pointing here:
Amail.eku.su
Aeku.su
Updating...
Whois for 91.236.136.168
This top-level domain has no publically available whois server. Try going to www.nic.arpa.
Ping
Updating...
Search 91.236.136.168
HTTP Port 80 Reply
Updating...