77.21.100 is a class C of IPs

Sample IPs from the class C 77.21.100

77.21.100.164	View precise location of 77.21.100.164 on the map!
77.21.100.230	View precise location of 77.21.100.230 on the map!
77.21.100.66	View precise location of 77.21.100.66 on the map!
77.21.100.101	View precise location of 77.21.100.101 on the map!
77.21.100.56	View precise location of 77.21.100.56 on the map!
77.21.100.117	View precise location of 77.21.100.117 on the map!
77.21.100.178	View precise location of 77.21.100.178 on the map!
77.21.100.122	View precise location of 77.21.100.122 on the map!
77.21.100.15	View precise location of 77.21.100.15 on the map!
77.21.100.234	View precise location of 77.21.100.234 on the map!
77.21.100.146	View precise location of 77.21.100.146 on the map!

10 Random IPs

196.40.61.33	Find precise map location of 196.40.61.33
185.91.160.90	Find precise map location of 185.91.160.90
209.107.118.166	Find precise map location of 209.107.118.166
65.67.129.90	Find precise map location of 65.67.129.90
172.161.224.32	Find precise map location of 172.161.224.32
80.158.240.28	Find precise map location of 80.158.240.28
220.115.237.207	Find precise map location of 220.115.237.207
186.206.45.13	Find precise map location of 186.206.45.13
251.126.91.69	Find precise map location of 251.126.91.69
63.180.205.116	Find precise map location of 63.180.205.116
97.42.40.145	Find precise map location of 97.42.40.145

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