28.221.55 is a class C of IPs

Sample IPs from the class C 28.221.55

28.221.55.116	View precise location of 28.221.55.116 on the map!
28.221.55.67	View precise location of 28.221.55.67 on the map!
28.221.55.255	View precise location of 28.221.55.255 on the map!
28.221.55.102	View precise location of 28.221.55.102 on the map!
28.221.55.126	View precise location of 28.221.55.126 on the map!
28.221.55.171	View precise location of 28.221.55.171 on the map!
28.221.55.86	View precise location of 28.221.55.86 on the map!
28.221.55.195	View precise location of 28.221.55.195 on the map!
28.221.55.119	View precise location of 28.221.55.119 on the map!
28.221.55.154	View precise location of 28.221.55.154 on the map!
28.221.55.110	View precise location of 28.221.55.110 on the map!

10 Random IPs

24.57.156.37	Find precise map location of 24.57.156.37
21.67.223.36	Find precise map location of 21.67.223.36
252.91.11.231	Find precise map location of 252.91.11.231
244.77.255.10	Find precise map location of 244.77.255.10
104.248.47.244	Find precise map location of 104.248.47.244
52.225.66.180	Find precise map location of 52.225.66.180
54.84.117.173	Find precise map location of 54.84.117.173
29.161.115.77	Find precise map location of 29.161.115.77
226.11.89.143	Find precise map location of 226.11.89.143
77.102.158.108	Find precise map location of 77.102.158.108
53.209.128.182	Find precise map location of 53.209.128.182

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