15.28.15 is a class C of IPs

Sample IPs from the class C 15.28.15

15.28.15.18	View precise location of 15.28.15.18 on the map!
15.28.15.249	View precise location of 15.28.15.249 on the map!
15.28.15.212	View precise location of 15.28.15.212 on the map!
15.28.15.149	View precise location of 15.28.15.149 on the map!
15.28.15.254	View precise location of 15.28.15.254 on the map!
15.28.15.221	View precise location of 15.28.15.221 on the map!
15.28.15.158	View precise location of 15.28.15.158 on the map!
15.28.15.136	View precise location of 15.28.15.136 on the map!
15.28.15.141	View precise location of 15.28.15.141 on the map!
15.28.15.52	View precise location of 15.28.15.52 on the map!
15.28.15.250	View precise location of 15.28.15.250 on the map!

10 Random IPs

70.153.209.157	Find precise map location of 70.153.209.157
139.175.44.223	Find precise map location of 139.175.44.223
92.188.187.147	Find precise map location of 92.188.187.147
44.225.242.143	Find precise map location of 44.225.242.143
98.242.117.81	Find precise map location of 98.242.117.81
181.129.143.198	Find precise map location of 181.129.143.198
127.63.43.53	Find precise map location of 127.63.43.53
2.190.188.57	Find precise map location of 2.190.188.57
224.38.132.94	Find precise map location of 224.38.132.94
207.78.227.117	Find precise map location of 207.78.227.117
183.128.240.54	Find precise map location of 183.128.240.54

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