172.73 is a class B of IPs

Sample IPs from the class B 172.73

172.73.200.79	View precise location of 172.73.200.79 on the map!
172.73.28.147	View precise location of 172.73.28.147 on the map!
172.73.166.200	View precise location of 172.73.166.200 on the map!
172.73.245.162	View precise location of 172.73.245.162 on the map!
172.73.129.116	View precise location of 172.73.129.116 on the map!
172.73.53.92	View precise location of 172.73.53.92 on the map!
172.73.123.142	View precise location of 172.73.123.142 on the map!
172.73.106.225	View precise location of 172.73.106.225 on the map!
172.73.233.56	View precise location of 172.73.233.56 on the map!
172.73.238.111	View precise location of 172.73.238.111 on the map!
172.73.95.50	View precise location of 172.73.95.50 on the map!

10 Random IPs

7.50.228.171	Find precise map location of 7.50.228.171
194.240.51.138	Find precise map location of 194.240.51.138
187.238.207.161	Find precise map location of 187.238.207.161
54.75.31.121	Find precise map location of 54.75.31.121
62.37.253.94	Find precise map location of 62.37.253.94
234.127.87.206	Find precise map location of 234.127.87.206
253.63.239.66	Find precise map location of 253.63.239.66
198.62.245.59	Find precise map location of 198.62.245.59
231.10.6.246	Find precise map location of 231.10.6.246
120.49.120.94	Find precise map location of 120.49.120.94
94.169.238.231	Find precise map location of 94.169.238.231

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