21.76.64 is a class C of IPs

Sample IPs from the class C 21.76.64

21.76.64.108	View precise location of 21.76.64.108 on the map!
21.76.64.97	View precise location of 21.76.64.97 on the map!
21.76.64.246	View precise location of 21.76.64.246 on the map!
21.76.64.120	View precise location of 21.76.64.120 on the map!
21.76.64.75	View precise location of 21.76.64.75 on the map!
21.76.64.225	View precise location of 21.76.64.225 on the map!
21.76.64.8	View precise location of 21.76.64.8 on the map!
21.76.64.15	View precise location of 21.76.64.15 on the map!
21.76.64.223	View precise location of 21.76.64.223 on the map!
21.76.64.126	View precise location of 21.76.64.126 on the map!
21.76.64.178	View precise location of 21.76.64.178 on the map!

10 Random IPs

131.116.149.113	Find precise map location of 131.116.149.113
60.182.218.102	Find precise map location of 60.182.218.102
107.24.245.19	Find precise map location of 107.24.245.19
48.42.82.208	Find precise map location of 48.42.82.208
56.137.79.63	Find precise map location of 56.137.79.63
104.149.12.11	Find precise map location of 104.149.12.11
25.233.74.211	Find precise map location of 25.233.74.211
54.18.233.159	Find precise map location of 54.18.233.159
113.144.204.253	Find precise map location of 113.144.204.253
193.110.235.70	Find precise map location of 193.110.235.70
34.206.42.188	Find precise map location of 34.206.42.188

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