251.143.52 is a class C of IPs

Sample IPs from the class C 251.143.52

251.143.52.173	View precise location of 251.143.52.173 on the map!
251.143.52.145	View precise location of 251.143.52.145 on the map!
251.143.52.100	View precise location of 251.143.52.100 on the map!
251.143.52.46	View precise location of 251.143.52.46 on the map!
251.143.52.45	View precise location of 251.143.52.45 on the map!
251.143.52.119	View precise location of 251.143.52.119 on the map!
251.143.52.24	View precise location of 251.143.52.24 on the map!
251.143.52.98	View precise location of 251.143.52.98 on the map!
251.143.52.144	View precise location of 251.143.52.144 on the map!
251.143.52.189	View precise location of 251.143.52.189 on the map!
251.143.52.179	View precise location of 251.143.52.179 on the map!

10 Random IPs

130.173.250.67	Find precise map location of 130.173.250.67
6.92.200.116	Find precise map location of 6.92.200.116
255.245.200.33	Find precise map location of 255.245.200.33
135.71.107.160	Find precise map location of 135.71.107.160
109.143.126.41	Find precise map location of 109.143.126.41
254.235.58.210	Find precise map location of 254.235.58.210
104.35.207.14	Find precise map location of 104.35.207.14
67.4.115.185	Find precise map location of 67.4.115.185
94.222.64.69	Find precise map location of 94.222.64.69
176.50.233.154	Find precise map location of 176.50.233.154
212.232.80.231	Find precise map location of 212.232.80.231

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