81.103.72 is a class C of IPs

Sample IPs from the class C 81.103.72

81.103.72.104	View precise location of 81.103.72.104 on the map!
81.103.72.6	View precise location of 81.103.72.6 on the map!
81.103.72.42	View precise location of 81.103.72.42 on the map!
81.103.72.169	View precise location of 81.103.72.169 on the map!
81.103.72.182	View precise location of 81.103.72.182 on the map!
81.103.72.171	View precise location of 81.103.72.171 on the map!
81.103.72.61	View precise location of 81.103.72.61 on the map!
81.103.72.202	View precise location of 81.103.72.202 on the map!
81.103.72.156	View precise location of 81.103.72.156 on the map!
81.103.72.34	View precise location of 81.103.72.34 on the map!
81.103.72.242	View precise location of 81.103.72.242 on the map!

10 Random IPs

67.145.83.130	Find precise map location of 67.145.83.130
50.27.114.100	Find precise map location of 50.27.114.100
47.224.111.229	Find precise map location of 47.224.111.229
223.163.141.95	Find precise map location of 223.163.141.95
148.250.199.212	Find precise map location of 148.250.199.212
68.109.231.251	Find precise map location of 68.109.231.251
240.65.41.62	Find precise map location of 240.65.41.62
206.120.214.236	Find precise map location of 206.120.214.236
105.65.89.46	Find precise map location of 105.65.89.46
33.11.137.158	Find precise map location of 33.11.137.158
248.146.231.168	Find precise map location of 248.146.231.168

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