121.207.140 is a class C of IPs

Sample IPs from the class C 121.207.140

121.207.140.164	View precise location of 121.207.140.164 on the map!
121.207.140.41	View precise location of 121.207.140.41 on the map!
121.207.140.252	View precise location of 121.207.140.252 on the map!
121.207.140.67	View precise location of 121.207.140.67 on the map!
121.207.140.108	View precise location of 121.207.140.108 on the map!
121.207.140.13	View precise location of 121.207.140.13 on the map!
121.207.140.219	View precise location of 121.207.140.219 on the map!
121.207.140.43	View precise location of 121.207.140.43 on the map!
121.207.140.56	View precise location of 121.207.140.56 on the map!
121.207.140.231	View precise location of 121.207.140.231 on the map!
121.207.140.6	View precise location of 121.207.140.6 on the map!

10 Random IPs

39.203.86.166	Find precise map location of 39.203.86.166
220.85.151.182	Find precise map location of 220.85.151.182
93.216.44.148	Find precise map location of 93.216.44.148
61.113.38.239	Find precise map location of 61.113.38.239
215.20.70.55	Find precise map location of 215.20.70.55
246.226.76.96	Find precise map location of 246.226.76.96
130.168.101.117	Find precise map location of 130.168.101.117
139.204.44.154	Find precise map location of 139.204.44.154
1.134.110.157	Find precise map location of 1.134.110.157
45.216.19.57	Find precise map location of 45.216.19.57
124.207.238.6	Find precise map location of 124.207.238.6

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