228.51.133 is a class C of IPs

Sample IPs from the class C 228.51.133

228.51.133.138	View precise location of 228.51.133.138 on the map!
228.51.133.71	View precise location of 228.51.133.71 on the map!
228.51.133.135	View precise location of 228.51.133.135 on the map!
228.51.133.46	View precise location of 228.51.133.46 on the map!
228.51.133.234	View precise location of 228.51.133.234 on the map!
228.51.133.141	View precise location of 228.51.133.141 on the map!
228.51.133.51	View precise location of 228.51.133.51 on the map!
228.51.133.229	View precise location of 228.51.133.229 on the map!
228.51.133.57	View precise location of 228.51.133.57 on the map!
228.51.133.141	View precise location of 228.51.133.141 on the map!
228.51.133.141	View precise location of 228.51.133.141 on the map!

10 Random IPs

67.73.246.57	Find precise map location of 67.73.246.57
71.19.75.42	Find precise map location of 71.19.75.42
125.140.44.150	Find precise map location of 125.140.44.150
73.238.208.32	Find precise map location of 73.238.208.32
236.222.3.51	Find precise map location of 236.222.3.51
210.253.229.172	Find precise map location of 210.253.229.172
210.73.185.220	Find precise map location of 210.73.185.220
177.150.155.109	Find precise map location of 177.150.155.109
39.4.70.55	Find precise map location of 39.4.70.55
183.189.76.180	Find precise map location of 183.189.76.180
69.197.249.214	Find precise map location of 69.197.249.214

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