51.231.30 is a class C of IPs

Sample IPs from the class C 51.231.30

51.231.30.25	View precise location of 51.231.30.25 on the map!
51.231.30.100	View precise location of 51.231.30.100 on the map!
51.231.30.230	View precise location of 51.231.30.230 on the map!
51.231.30.29	View precise location of 51.231.30.29 on the map!
51.231.30.51	View precise location of 51.231.30.51 on the map!
51.231.30.20	View precise location of 51.231.30.20 on the map!
51.231.30.179	View precise location of 51.231.30.179 on the map!
51.231.30.6	View precise location of 51.231.30.6 on the map!
51.231.30.111	View precise location of 51.231.30.111 on the map!
51.231.30.196	View precise location of 51.231.30.196 on the map!
51.231.30.109	View precise location of 51.231.30.109 on the map!

10 Random IPs

227.210.137.124	Find precise map location of 227.210.137.124
198.124.26.144	Find precise map location of 198.124.26.144
232.85.148.72	Find precise map location of 232.85.148.72
238.249.88.9	Find precise map location of 238.249.88.9
150.43.47.27	Find precise map location of 150.43.47.27
207.81.145.224	Find precise map location of 207.81.145.224
253.140.192.179	Find precise map location of 253.140.192.179
32.97.224.141	Find precise map location of 32.97.224.141
63.162.16.97	Find precise map location of 63.162.16.97
60.105.153.249	Find precise map location of 60.105.153.249
108.100.2.193	Find precise map location of 108.100.2.193

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