21.18.107 is a class C of IPs

Sample IPs from the class C 21.18.107

21.18.107.234	View precise location of 21.18.107.234 on the map!
21.18.107.7	View precise location of 21.18.107.7 on the map!
21.18.107.149	View precise location of 21.18.107.149 on the map!
21.18.107.34	View precise location of 21.18.107.34 on the map!
21.18.107.72	View precise location of 21.18.107.72 on the map!
21.18.107.220	View precise location of 21.18.107.220 on the map!
21.18.107.75	View precise location of 21.18.107.75 on the map!
21.18.107.191	View precise location of 21.18.107.191 on the map!
21.18.107.206	View precise location of 21.18.107.206 on the map!
21.18.107.64	View precise location of 21.18.107.64 on the map!
21.18.107.65	View precise location of 21.18.107.65 on the map!

10 Random IPs

244.208.54.137	Find precise map location of 244.208.54.137
40.185.218.32	Find precise map location of 40.185.218.32
109.244.121.26	Find precise map location of 109.244.121.26
87.47.122.82	Find precise map location of 87.47.122.82
79.189.71.243	Find precise map location of 79.189.71.243
214.76.180.216	Find precise map location of 214.76.180.216
71.77.142.142	Find precise map location of 71.77.142.142
96.106.94.91	Find precise map location of 96.106.94.91
224.12.128.130	Find precise map location of 224.12.128.130
60.142.49.200	Find precise map location of 60.142.49.200
128.103.252.214	Find precise map location of 128.103.252.214

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