228.21.56 is a class C of IPs

Sample IPs from the class C 228.21.56

228.21.56.42	View precise location of 228.21.56.42 on the map!
228.21.56.109	View precise location of 228.21.56.109 on the map!
228.21.56.240	View precise location of 228.21.56.240 on the map!
228.21.56.147	View precise location of 228.21.56.147 on the map!
228.21.56.128	View precise location of 228.21.56.128 on the map!
228.21.56.42	View precise location of 228.21.56.42 on the map!
228.21.56.148	View precise location of 228.21.56.148 on the map!
228.21.56.34	View precise location of 228.21.56.34 on the map!
228.21.56.104	View precise location of 228.21.56.104 on the map!
228.21.56.207	View precise location of 228.21.56.207 on the map!
228.21.56.193	View precise location of 228.21.56.193 on the map!

10 Random IPs

9.208.110.210	Find precise map location of 9.208.110.210
150.84.18.176	Find precise map location of 150.84.18.176
202.152.150.251	Find precise map location of 202.152.150.251
237.220.138.182	Find precise map location of 237.220.138.182
14.183.44.151	Find precise map location of 14.183.44.151
184.247.54.151	Find precise map location of 184.247.54.151
49.43.79.18	Find precise map location of 49.43.79.18
194.215.156.100	Find precise map location of 194.215.156.100
254.82.224.155	Find precise map location of 254.82.224.155
48.81.1.239	Find precise map location of 48.81.1.239
14.143.89.108	Find precise map location of 14.143.89.108

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