21.63.115 is a class C of IPs

Sample IPs from the class C 21.63.115

21.63.115.254	View precise location of 21.63.115.254 on the map!
21.63.115.31	View precise location of 21.63.115.31 on the map!
21.63.115.105	View precise location of 21.63.115.105 on the map!
21.63.115.168	View precise location of 21.63.115.168 on the map!
21.63.115.25	View precise location of 21.63.115.25 on the map!
21.63.115.80	View precise location of 21.63.115.80 on the map!
21.63.115.130	View precise location of 21.63.115.130 on the map!
21.63.115.154	View precise location of 21.63.115.154 on the map!
21.63.115.198	View precise location of 21.63.115.198 on the map!
21.63.115.118	View precise location of 21.63.115.118 on the map!
21.63.115.133	View precise location of 21.63.115.133 on the map!

10 Random IPs

15.203.157.34	Find precise map location of 15.203.157.34
45.28.229.187	Find precise map location of 45.28.229.187
58.169.45.55	Find precise map location of 58.169.45.55
85.106.126.223	Find precise map location of 85.106.126.223
219.117.28.123	Find precise map location of 219.117.28.123
64.20.193.36	Find precise map location of 64.20.193.36
204.94.216.50	Find precise map location of 204.94.216.50
172.159.37.100	Find precise map location of 172.159.37.100
214.250.150.47	Find precise map location of 214.250.150.47
146.58.75.155	Find precise map location of 146.58.75.155
148.127.60.254	Find precise map location of 148.127.60.254

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