121.99.50 is a class C of IPs

Sample IPs from the class C 121.99.50

121.99.50.122	View precise location of 121.99.50.122 on the map!
121.99.50.22	View precise location of 121.99.50.22 on the map!
121.99.50.215	View precise location of 121.99.50.215 on the map!
121.99.50.33	View precise location of 121.99.50.33 on the map!
121.99.50.183	View precise location of 121.99.50.183 on the map!
121.99.50.42	View precise location of 121.99.50.42 on the map!
121.99.50.81	View precise location of 121.99.50.81 on the map!
121.99.50.251	View precise location of 121.99.50.251 on the map!
121.99.50.21	View precise location of 121.99.50.21 on the map!
121.99.50.52	View precise location of 121.99.50.52 on the map!
121.99.50.168	View precise location of 121.99.50.168 on the map!

10 Random IPs

99.228.185.171	Find precise map location of 99.228.185.171
141.159.213.47	Find precise map location of 141.159.213.47
199.69.109.151	Find precise map location of 199.69.109.151
30.250.98.135	Find precise map location of 30.250.98.135
127.138.32.57	Find precise map location of 127.138.32.57
18.76.227.184	Find precise map location of 18.76.227.184
123.176.135.197	Find precise map location of 123.176.135.197
4.124.172.130	Find precise map location of 4.124.172.130
219.209.118.120	Find precise map location of 219.209.118.120
93.227.170.181	Find precise map location of 93.227.170.181
194.142.65.60	Find precise map location of 194.142.65.60

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