56.81.57 is a class C of IPs

Sample IPs from the class C 56.81.57

56.81.57.242	View precise location of 56.81.57.242 on the map!
56.81.57.90	View precise location of 56.81.57.90 on the map!
56.81.57.42	View precise location of 56.81.57.42 on the map!
56.81.57.192	View precise location of 56.81.57.192 on the map!
56.81.57.204	View precise location of 56.81.57.204 on the map!
56.81.57.166	View precise location of 56.81.57.166 on the map!
56.81.57.183	View precise location of 56.81.57.183 on the map!
56.81.57.157	View precise location of 56.81.57.157 on the map!
56.81.57.248	View precise location of 56.81.57.248 on the map!
56.81.57.199	View precise location of 56.81.57.199 on the map!
56.81.57.230	View precise location of 56.81.57.230 on the map!

10 Random IPs

103.129.235.67	Find precise map location of 103.129.235.67
135.220.26.49	Find precise map location of 135.220.26.49
173.206.36.75	Find precise map location of 173.206.36.75
109.113.168.40	Find precise map location of 109.113.168.40
85.160.128.165	Find precise map location of 85.160.128.165
92.39.114.207	Find precise map location of 92.39.114.207
110.116.242.15	Find precise map location of 110.116.242.15
23.116.187.28	Find precise map location of 23.116.187.28
78.176.164.137	Find precise map location of 78.176.164.137
78.144.217.29	Find precise map location of 78.144.217.29
214.60.246.64	Find precise map location of 214.60.246.64

TestURI.org is a free web-sniffer.net alternative. It alows you to send custom HTTP request and check the HTTP response.