221.53.4 is a class C of IPs

Sample IPs from the class C 221.53.4

221.53.4.62	View precise location of 221.53.4.62 on the map!
221.53.4.87	View precise location of 221.53.4.87 on the map!
221.53.4.138	View precise location of 221.53.4.138 on the map!
221.53.4.55	View precise location of 221.53.4.55 on the map!
221.53.4.4	View precise location of 221.53.4.4 on the map!
221.53.4.238	View precise location of 221.53.4.238 on the map!
221.53.4.113	View precise location of 221.53.4.113 on the map!
221.53.4.82	View precise location of 221.53.4.82 on the map!
221.53.4.124	View precise location of 221.53.4.124 on the map!
221.53.4.71	View precise location of 221.53.4.71 on the map!
221.53.4.121	View precise location of 221.53.4.121 on the map!

10 Random IPs

60.162.72.235	Find precise map location of 60.162.72.235
68.125.95.93	Find precise map location of 68.125.95.93
73.65.149.220	Find precise map location of 73.65.149.220
205.173.163.39	Find precise map location of 205.173.163.39
168.29.84.241	Find precise map location of 168.29.84.241
149.219.185.92	Find precise map location of 149.219.185.92
63.217.59.241	Find precise map location of 63.217.59.241
87.233.200.174	Find precise map location of 87.233.200.174
186.214.217.201	Find precise map location of 186.214.217.201
162.149.38.102	Find precise map location of 162.149.38.102
9.103.173.205	Find precise map location of 9.103.173.205

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