21.231.192 is a class C of IPs

Sample IPs from the class C 21.231.192

21.231.192.99	View precise location of 21.231.192.99 on the map!
21.231.192.64	View precise location of 21.231.192.64 on the map!
21.231.192.108	View precise location of 21.231.192.108 on the map!
21.231.192.114	View precise location of 21.231.192.114 on the map!
21.231.192.40	View precise location of 21.231.192.40 on the map!
21.231.192.157	View precise location of 21.231.192.157 on the map!
21.231.192.3	View precise location of 21.231.192.3 on the map!
21.231.192.192	View precise location of 21.231.192.192 on the map!
21.231.192.205	View precise location of 21.231.192.205 on the map!
21.231.192.30	View precise location of 21.231.192.30 on the map!
21.231.192.141	View precise location of 21.231.192.141 on the map!

10 Random IPs

76.155.168.17	Find precise map location of 76.155.168.17
86.202.170.244	Find precise map location of 86.202.170.244
187.250.99.102	Find precise map location of 187.250.99.102
203.110.228.119	Find precise map location of 203.110.228.119
144.99.111.195	Find precise map location of 144.99.111.195
92.81.103.59	Find precise map location of 92.81.103.59
221.3.176.149	Find precise map location of 221.3.176.149
183.183.228.173	Find precise map location of 183.183.228.173
215.55.178.155	Find precise map location of 215.55.178.155
105.48.175.208	Find precise map location of 105.48.175.208
254.59.120.56	Find precise map location of 254.59.120.56

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