21.163.135 is a class C of IPs

Sample IPs from the class C 21.163.135

21.163.135.85	View precise location of 21.163.135.85 on the map!
21.163.135.96	View precise location of 21.163.135.96 on the map!
21.163.135.226	View precise location of 21.163.135.226 on the map!
21.163.135.111	View precise location of 21.163.135.111 on the map!
21.163.135.158	View precise location of 21.163.135.158 on the map!
21.163.135.2	View precise location of 21.163.135.2 on the map!
21.163.135.161	View precise location of 21.163.135.161 on the map!
21.163.135.200	View precise location of 21.163.135.200 on the map!
21.163.135.174	View precise location of 21.163.135.174 on the map!
21.163.135.19	View precise location of 21.163.135.19 on the map!
21.163.135.105	View precise location of 21.163.135.105 on the map!

10 Random IPs

38.243.233.217	Find precise map location of 38.243.233.217
215.2.9.64	Find precise map location of 215.2.9.64
16.4.169.184	Find precise map location of 16.4.169.184
227.188.94.111	Find precise map location of 227.188.94.111
213.184.205.107	Find precise map location of 213.184.205.107
158.130.172.247	Find precise map location of 158.130.172.247
64.148.247.177	Find precise map location of 64.148.247.177
159.177.58.187	Find precise map location of 159.177.58.187
187.164.104.52	Find precise map location of 187.164.104.52
224.59.203.59	Find precise map location of 224.59.203.59
232.197.138.7	Find precise map location of 232.197.138.7

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