121.6.42 is a class C of IPs

Sample IPs from the class C 121.6.42

121.6.42.159	View precise location of 121.6.42.159 on the map!
121.6.42.165	View precise location of 121.6.42.165 on the map!
121.6.42.86	View precise location of 121.6.42.86 on the map!
121.6.42.95	View precise location of 121.6.42.95 on the map!
121.6.42.209	View precise location of 121.6.42.209 on the map!
121.6.42.64	View precise location of 121.6.42.64 on the map!
121.6.42.112	View precise location of 121.6.42.112 on the map!
121.6.42.67	View precise location of 121.6.42.67 on the map!
121.6.42.67	View precise location of 121.6.42.67 on the map!
121.6.42.254	View precise location of 121.6.42.254 on the map!
121.6.42.3	View precise location of 121.6.42.3 on the map!

10 Random IPs

89.236.59.29	Find precise map location of 89.236.59.29
95.36.27.85	Find precise map location of 95.36.27.85
160.224.198.176	Find precise map location of 160.224.198.176
232.235.139.129	Find precise map location of 232.235.139.129
226.37.119.168	Find precise map location of 226.37.119.168
166.9.13.139	Find precise map location of 166.9.13.139
115.176.116.51	Find precise map location of 115.176.116.51
16.201.119.108	Find precise map location of 16.201.119.108
108.209.168.46	Find precise map location of 108.209.168.46
221.143.139.21	Find precise map location of 221.143.139.21
250.191.30.184	Find precise map location of 250.191.30.184

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