203.153.21 is a class C of IPs

Sample IPs from the class C 203.153.21

203.153.21.58	View precise location of 203.153.21.58 on the map!
203.153.21.66	View precise location of 203.153.21.66 on the map!
203.153.21.246	View precise location of 203.153.21.246 on the map!
203.153.21.60	View precise location of 203.153.21.60 on the map!
203.153.21.49	View precise location of 203.153.21.49 on the map!
203.153.21.28	View precise location of 203.153.21.28 on the map!
203.153.21.19	View precise location of 203.153.21.19 on the map!
203.153.21.141	View precise location of 203.153.21.141 on the map!
203.153.21.104	View precise location of 203.153.21.104 on the map!
203.153.21.179	View precise location of 203.153.21.179 on the map!
203.153.21.102	View precise location of 203.153.21.102 on the map!

10 Random IPs

2.212.44.247	Find precise map location of 2.212.44.247
216.139.79.34	Find precise map location of 216.139.79.34
248.57.80.251	Find precise map location of 248.57.80.251
122.54.118.101	Find precise map location of 122.54.118.101
101.179.68.179	Find precise map location of 101.179.68.179
199.60.62.214	Find precise map location of 199.60.62.214
154.124.18.95	Find precise map location of 154.124.18.95
24.146.212.43	Find precise map location of 24.146.212.43
88.10.151.207	Find precise map location of 88.10.151.207
145.120.141.33	Find precise map location of 145.120.141.33
20.8.240.30	Find precise map location of 20.8.240.30

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