81.213.157 is a class C of IPs

Sample IPs from the class C 81.213.157

81.213.157.178	View precise location of 81.213.157.178 on the map!
81.213.157.144	View precise location of 81.213.157.144 on the map!
81.213.157.164	View precise location of 81.213.157.164 on the map!
81.213.157.227	View precise location of 81.213.157.227 on the map!
81.213.157.7	View precise location of 81.213.157.7 on the map!
81.213.157.84	View precise location of 81.213.157.84 on the map!
81.213.157.110	View precise location of 81.213.157.110 on the map!
81.213.157.195	View precise location of 81.213.157.195 on the map!
81.213.157.71	View precise location of 81.213.157.71 on the map!
81.213.157.144	View precise location of 81.213.157.144 on the map!
81.213.157.234	View precise location of 81.213.157.234 on the map!

10 Random IPs

178.87.183.151	Find precise map location of 178.87.183.151
237.114.227.164	Find precise map location of 237.114.227.164
173.91.86.81	Find precise map location of 173.91.86.81
62.174.3.164	Find precise map location of 62.174.3.164
36.231.178.105	Find precise map location of 36.231.178.105
149.161.2.221	Find precise map location of 149.161.2.221
144.21.252.167	Find precise map location of 144.21.252.167
197.220.26.33	Find precise map location of 197.220.26.33
148.128.169.91	Find precise map location of 148.128.169.91
59.185.73.120	Find precise map location of 59.185.73.120
252.122.102.166	Find precise map location of 252.122.102.166

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