121.105.99 is a class C of IPs

Sample IPs from the class C 121.105.99

121.105.99.90	View precise location of 121.105.99.90 on the map!
121.105.99.25	View precise location of 121.105.99.25 on the map!
121.105.99.181	View precise location of 121.105.99.181 on the map!
121.105.99.208	View precise location of 121.105.99.208 on the map!
121.105.99.124	View precise location of 121.105.99.124 on the map!
121.105.99.9	View precise location of 121.105.99.9 on the map!
121.105.99.3	View precise location of 121.105.99.3 on the map!
121.105.99.55	View precise location of 121.105.99.55 on the map!
121.105.99.172	View precise location of 121.105.99.172 on the map!
121.105.99.123	View precise location of 121.105.99.123 on the map!
121.105.99.224	View precise location of 121.105.99.224 on the map!

10 Random IPs

167.117.113.246	Find precise map location of 167.117.113.246
19.102.202.158	Find precise map location of 19.102.202.158
139.11.54.94	Find precise map location of 139.11.54.94
40.209.230.203	Find precise map location of 40.209.230.203
27.100.59.119	Find precise map location of 27.100.59.119
161.88.44.139	Find precise map location of 161.88.44.139
170.70.173.238	Find precise map location of 170.70.173.238
164.190.148.30	Find precise map location of 164.190.148.30
199.199.227.171	Find precise map location of 199.199.227.171
140.94.30.248	Find precise map location of 140.94.30.248
238.109.92.21	Find precise map location of 238.109.92.21

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