121.147.144 is a class C of IPs

Sample IPs from the class C 121.147.144

121.147.144.254	View precise location of 121.147.144.254 on the map!
121.147.144.53	View precise location of 121.147.144.53 on the map!
121.147.144.24	View precise location of 121.147.144.24 on the map!
121.147.144.181	View precise location of 121.147.144.181 on the map!
121.147.144.224	View precise location of 121.147.144.224 on the map!
121.147.144.78	View precise location of 121.147.144.78 on the map!
121.147.144.24	View precise location of 121.147.144.24 on the map!
121.147.144.191	View precise location of 121.147.144.191 on the map!
121.147.144.5	View precise location of 121.147.144.5 on the map!
121.147.144.136	View precise location of 121.147.144.136 on the map!
121.147.144.28	View precise location of 121.147.144.28 on the map!

10 Random IPs

36.181.71.189	Find precise map location of 36.181.71.189
83.185.64.233	Find precise map location of 83.185.64.233
31.147.240.189	Find precise map location of 31.147.240.189
83.249.26.219	Find precise map location of 83.249.26.219
183.169.207.57	Find precise map location of 183.169.207.57
203.4.106.96	Find precise map location of 203.4.106.96
226.234.181.3	Find precise map location of 226.234.181.3
18.189.49.218	Find precise map location of 18.189.49.218
136.248.157.25	Find precise map location of 136.248.157.25
230.8.9.226	Find precise map location of 230.8.9.226
167.235.210.6	Find precise map location of 167.235.210.6

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