228.81.4 is a class C of IPs

Sample IPs from the class C 228.81.4

228.81.4.1	View precise location of 228.81.4.1 on the map!
228.81.4.177	View precise location of 228.81.4.177 on the map!
228.81.4.23	View precise location of 228.81.4.23 on the map!
228.81.4.4	View precise location of 228.81.4.4 on the map!
228.81.4.88	View precise location of 228.81.4.88 on the map!
228.81.4.163	View precise location of 228.81.4.163 on the map!
228.81.4.54	View precise location of 228.81.4.54 on the map!
228.81.4.127	View precise location of 228.81.4.127 on the map!
228.81.4.112	View precise location of 228.81.4.112 on the map!
228.81.4.225	View precise location of 228.81.4.225 on the map!
228.81.4.152	View precise location of 228.81.4.152 on the map!

10 Random IPs

176.232.18.71	Find precise map location of 176.232.18.71
69.243.63.86	Find precise map location of 69.243.63.86
149.240.15.192	Find precise map location of 149.240.15.192
79.111.228.83	Find precise map location of 79.111.228.83
167.29.152.107	Find precise map location of 167.29.152.107
75.38.227.195	Find precise map location of 75.38.227.195
80.232.219.91	Find precise map location of 80.232.219.91
210.93.6.187	Find precise map location of 210.93.6.187
71.86.20.151	Find precise map location of 71.86.20.151
155.34.183.3	Find precise map location of 155.34.183.3
169.104.125.244	Find precise map location of 169.104.125.244

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