163.21.170 is a class C of IPs

Sample IPs from the class C 163.21.170

163.21.170.231	View precise location of 163.21.170.231 on the map!
163.21.170.196	View precise location of 163.21.170.196 on the map!
163.21.170.122	View precise location of 163.21.170.122 on the map!
163.21.170.107	View precise location of 163.21.170.107 on the map!
163.21.170.106	View precise location of 163.21.170.106 on the map!
163.21.170.227	View precise location of 163.21.170.227 on the map!
163.21.170.247	View precise location of 163.21.170.247 on the map!
163.21.170.2	View precise location of 163.21.170.2 on the map!
163.21.170.19	View precise location of 163.21.170.19 on the map!
163.21.170.29	View precise location of 163.21.170.29 on the map!
163.21.170.166	View precise location of 163.21.170.166 on the map!

10 Random IPs

132.159.58.39	Find precise map location of 132.159.58.39
83.127.100.165	Find precise map location of 83.127.100.165
235.167.184.139	Find precise map location of 235.167.184.139
188.239.64.248	Find precise map location of 188.239.64.248
238.86.168.64	Find precise map location of 238.86.168.64
103.56.77.192	Find precise map location of 103.56.77.192
65.98.16.51	Find precise map location of 65.98.16.51
99.198.75.155	Find precise map location of 99.198.75.155
225.14.47.242	Find precise map location of 225.14.47.242
172.224.116.250	Find precise map location of 172.224.116.250
172.77.254.245	Find precise map location of 172.77.254.245

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