105.21.4 is a class C of IPs

Sample IPs from the class C 105.21.4

105.21.4.168	View precise location of 105.21.4.168 on the map!
105.21.4.221	View precise location of 105.21.4.221 on the map!
105.21.4.210	View precise location of 105.21.4.210 on the map!
105.21.4.18	View precise location of 105.21.4.18 on the map!
105.21.4.232	View precise location of 105.21.4.232 on the map!
105.21.4.39	View precise location of 105.21.4.39 on the map!
105.21.4.189	View precise location of 105.21.4.189 on the map!
105.21.4.100	View precise location of 105.21.4.100 on the map!
105.21.4.117	View precise location of 105.21.4.117 on the map!
105.21.4.60	View precise location of 105.21.4.60 on the map!
105.21.4.237	View precise location of 105.21.4.237 on the map!

10 Random IPs

115.108.255.161	Find precise map location of 115.108.255.161
160.56.189.141	Find precise map location of 160.56.189.141
228.155.177.112	Find precise map location of 228.155.177.112
156.111.157.67	Find precise map location of 156.111.157.67
219.164.187.143	Find precise map location of 219.164.187.143
52.222.27.19	Find precise map location of 52.222.27.19
218.71.248.161	Find precise map location of 218.71.248.161
207.229.139.108	Find precise map location of 207.229.139.108
32.228.24.229	Find precise map location of 32.228.24.229
153.125.255.13	Find precise map location of 153.125.255.13
225.238.160.124	Find precise map location of 225.238.160.124

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