28.19.28 is a class C of IPs

Sample IPs from the class C 28.19.28

28.19.28.32	View precise location of 28.19.28.32 on the map!
28.19.28.101	View precise location of 28.19.28.101 on the map!
28.19.28.208	View precise location of 28.19.28.208 on the map!
28.19.28.209	View precise location of 28.19.28.209 on the map!
28.19.28.74	View precise location of 28.19.28.74 on the map!
28.19.28.180	View precise location of 28.19.28.180 on the map!
28.19.28.103	View precise location of 28.19.28.103 on the map!
28.19.28.233	View precise location of 28.19.28.233 on the map!
28.19.28.51	View precise location of 28.19.28.51 on the map!
28.19.28.67	View precise location of 28.19.28.67 on the map!
28.19.28.186	View precise location of 28.19.28.186 on the map!

10 Random IPs

173.239.110.69	Find precise map location of 173.239.110.69
232.71.58.122	Find precise map location of 232.71.58.122
155.202.94.207	Find precise map location of 155.202.94.207
182.155.20.76	Find precise map location of 182.155.20.76
122.187.134.203	Find precise map location of 122.187.134.203
133.22.181.158	Find precise map location of 133.22.181.158
208.57.212.153	Find precise map location of 208.57.212.153
178.205.222.9	Find precise map location of 178.205.222.9
199.134.190.8	Find precise map location of 199.134.190.8
77.70.223.191	Find precise map location of 77.70.223.191
203.33.139.89	Find precise map location of 203.33.139.89

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