15.13.72 is a class C of IPs

Sample IPs from the class C 15.13.72

15.13.72.215	View precise location of 15.13.72.215 on the map!
15.13.72.173	View precise location of 15.13.72.173 on the map!
15.13.72.197	View precise location of 15.13.72.197 on the map!
15.13.72.70	View precise location of 15.13.72.70 on the map!
15.13.72.226	View precise location of 15.13.72.226 on the map!
15.13.72.61	View precise location of 15.13.72.61 on the map!
15.13.72.103	View precise location of 15.13.72.103 on the map!
15.13.72.80	View precise location of 15.13.72.80 on the map!
15.13.72.102	View precise location of 15.13.72.102 on the map!
15.13.72.7	View precise location of 15.13.72.7 on the map!
15.13.72.119	View precise location of 15.13.72.119 on the map!

10 Random IPs

52.156.92.118	Find precise map location of 52.156.92.118
167.118.245.179	Find precise map location of 167.118.245.179
11.224.5.97	Find precise map location of 11.224.5.97
4.148.116.134	Find precise map location of 4.148.116.134
148.240.137.188	Find precise map location of 148.240.137.188
11.171.24.151	Find precise map location of 11.171.24.151
32.156.231.184	Find precise map location of 32.156.231.184
145.232.145.169	Find precise map location of 145.232.145.169
184.17.7.93	Find precise map location of 184.17.7.93
53.70.89.231	Find precise map location of 53.70.89.231
245.96.247.71	Find precise map location of 245.96.247.71

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