121.79.100 is a class C of IPs

Sample IPs from the class C 121.79.100

121.79.100.223	View precise location of 121.79.100.223 on the map!
121.79.100.194	View precise location of 121.79.100.194 on the map!
121.79.100.255	View precise location of 121.79.100.255 on the map!
121.79.100.55	View precise location of 121.79.100.55 on the map!
121.79.100.117	View precise location of 121.79.100.117 on the map!
121.79.100.178	View precise location of 121.79.100.178 on the map!
121.79.100.206	View precise location of 121.79.100.206 on the map!
121.79.100.196	View precise location of 121.79.100.196 on the map!
121.79.100.97	View precise location of 121.79.100.97 on the map!
121.79.100.114	View precise location of 121.79.100.114 on the map!
121.79.100.8	View precise location of 121.79.100.8 on the map!

10 Random IPs

136.187.199.65	Find precise map location of 136.187.199.65
84.11.72.65	Find precise map location of 84.11.72.65
63.203.229.77	Find precise map location of 63.203.229.77
240.239.173.178	Find precise map location of 240.239.173.178
145.130.39.17	Find precise map location of 145.130.39.17
247.119.28.83	Find precise map location of 247.119.28.83
154.35.146.56	Find precise map location of 154.35.146.56
2.18.188.106	Find precise map location of 2.18.188.106
177.45.210.79	Find precise map location of 177.45.210.79
133.245.70.184	Find precise map location of 133.245.70.184
143.16.106.2	Find precise map location of 143.16.106.2

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