243.142.121 is a class C of IPs

Sample IPs from the class C 243.142.121

243.142.121.130	View precise location of 243.142.121.130 on the map!
243.142.121.187	View precise location of 243.142.121.187 on the map!
243.142.121.156	View precise location of 243.142.121.156 on the map!
243.142.121.236	View precise location of 243.142.121.236 on the map!
243.142.121.138	View precise location of 243.142.121.138 on the map!
243.142.121.214	View precise location of 243.142.121.214 on the map!
243.142.121.34	View precise location of 243.142.121.34 on the map!
243.142.121.242	View precise location of 243.142.121.242 on the map!
243.142.121.150	View precise location of 243.142.121.150 on the map!
243.142.121.206	View precise location of 243.142.121.206 on the map!
243.142.121.42	View precise location of 243.142.121.42 on the map!

10 Random IPs

196.55.104.9	Find precise map location of 196.55.104.9
68.48.153.113	Find precise map location of 68.48.153.113
96.54.78.142	Find precise map location of 96.54.78.142
57.62.24.151	Find precise map location of 57.62.24.151
242.43.186.92	Find precise map location of 242.43.186.92
63.86.16.93	Find precise map location of 63.86.16.93
160.212.193.196	Find precise map location of 160.212.193.196
70.64.85.182	Find precise map location of 70.64.85.182
112.218.129.57	Find precise map location of 112.218.129.57
39.32.16.35	Find precise map location of 39.32.16.35
48.4.36.89	Find precise map location of 48.4.36.89

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