121.204.173 is a class C of IPs

Sample IPs from the class C 121.204.173

121.204.173.59	View precise location of 121.204.173.59 on the map!
121.204.173.71	View precise location of 121.204.173.71 on the map!
121.204.173.208	View precise location of 121.204.173.208 on the map!
121.204.173.232	View precise location of 121.204.173.232 on the map!
121.204.173.102	View precise location of 121.204.173.102 on the map!
121.204.173.188	View precise location of 121.204.173.188 on the map!
121.204.173.24	View precise location of 121.204.173.24 on the map!
121.204.173.56	View precise location of 121.204.173.56 on the map!
121.204.173.179	View precise location of 121.204.173.179 on the map!
121.204.173.40	View precise location of 121.204.173.40 on the map!
121.204.173.205	View precise location of 121.204.173.205 on the map!

10 Random IPs

140.15.4.221	Find precise map location of 140.15.4.221
110.206.101.128	Find precise map location of 110.206.101.128
185.48.201.143	Find precise map location of 185.48.201.143
49.115.196.50	Find precise map location of 49.115.196.50
18.49.37.143	Find precise map location of 18.49.37.143
226.67.237.9	Find precise map location of 226.67.237.9
117.85.158.202	Find precise map location of 117.85.158.202
250.21.108.119	Find precise map location of 250.21.108.119
119.13.160.173	Find precise map location of 119.13.160.173
116.12.72.56	Find precise map location of 116.12.72.56
51.89.98.159	Find precise map location of 51.89.98.159

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