121.51.101 is a class C of IPs

Sample IPs from the class C 121.51.101

121.51.101.29	View precise location of 121.51.101.29 on the map!
121.51.101.60	View precise location of 121.51.101.60 on the map!
121.51.101.231	View precise location of 121.51.101.231 on the map!
121.51.101.209	View precise location of 121.51.101.209 on the map!
121.51.101.66	View precise location of 121.51.101.66 on the map!
121.51.101.200	View precise location of 121.51.101.200 on the map!
121.51.101.223	View precise location of 121.51.101.223 on the map!
121.51.101.247	View precise location of 121.51.101.247 on the map!
121.51.101.246	View precise location of 121.51.101.246 on the map!
121.51.101.105	View precise location of 121.51.101.105 on the map!
121.51.101.76	View precise location of 121.51.101.76 on the map!

10 Random IPs

196.201.220.154	Find precise map location of 196.201.220.154
56.202.210.86	Find precise map location of 56.202.210.86
104.113.126.89	Find precise map location of 104.113.126.89
124.159.34.167	Find precise map location of 124.159.34.167
79.213.239.80	Find precise map location of 79.213.239.80
98.248.61.2	Find precise map location of 98.248.61.2
99.242.141.236	Find precise map location of 99.242.141.236
191.203.73.174	Find precise map location of 191.203.73.174
252.20.246.192	Find precise map location of 252.20.246.192
123.253.180.189	Find precise map location of 123.253.180.189
218.110.187.214	Find precise map location of 218.110.187.214

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