221.164.156 is a class C of IPs

Sample IPs from the class C 221.164.156

221.164.156.92	View precise location of 221.164.156.92 on the map!
221.164.156.127	View precise location of 221.164.156.127 on the map!
221.164.156.166	View precise location of 221.164.156.166 on the map!
221.164.156.106	View precise location of 221.164.156.106 on the map!
221.164.156.22	View precise location of 221.164.156.22 on the map!
221.164.156.166	View precise location of 221.164.156.166 on the map!
221.164.156.149	View precise location of 221.164.156.149 on the map!
221.164.156.19	View precise location of 221.164.156.19 on the map!
221.164.156.76	View precise location of 221.164.156.76 on the map!
221.164.156.78	View precise location of 221.164.156.78 on the map!
221.164.156.164	View precise location of 221.164.156.164 on the map!

10 Random IPs

81.147.46.134	Find precise map location of 81.147.46.134
200.183.149.254	Find precise map location of 200.183.149.254
20.181.10.223	Find precise map location of 20.181.10.223
80.25.42.238	Find precise map location of 80.25.42.238
221.147.193.227	Find precise map location of 221.147.193.227
18.239.77.31	Find precise map location of 18.239.77.31
89.88.226.184	Find precise map location of 89.88.226.184
193.203.237.97	Find precise map location of 193.203.237.97
127.49.218.17	Find precise map location of 127.49.218.17
40.150.159.188	Find precise map location of 40.150.159.188
89.78.13.10	Find precise map location of 89.78.13.10

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