199.228.121 is a class C of IPs

Sample IPs from the class C 199.228.121

199.228.121.235	View precise location of 199.228.121.235 on the map!
199.228.121.26	View precise location of 199.228.121.26 on the map!
199.228.121.140	View precise location of 199.228.121.140 on the map!
199.228.121.241	View precise location of 199.228.121.241 on the map!
199.228.121.231	View precise location of 199.228.121.231 on the map!
199.228.121.59	View precise location of 199.228.121.59 on the map!
199.228.121.70	View precise location of 199.228.121.70 on the map!
199.228.121.49	View precise location of 199.228.121.49 on the map!
199.228.121.165	View precise location of 199.228.121.165 on the map!
199.228.121.73	View precise location of 199.228.121.73 on the map!
199.228.121.187	View precise location of 199.228.121.187 on the map!

10 Random IPs

69.90.131.200	Find precise map location of 69.90.131.200
199.61.2.94	Find precise map location of 199.61.2.94
238.224.64.27	Find precise map location of 238.224.64.27
23.201.245.61	Find precise map location of 23.201.245.61
5.93.134.125	Find precise map location of 5.93.134.125
211.212.82.151	Find precise map location of 211.212.82.151
74.35.77.59	Find precise map location of 74.35.77.59
27.243.229.237	Find precise map location of 27.243.229.237
245.126.184.220	Find precise map location of 245.126.184.220
80.232.212.167	Find precise map location of 80.232.212.167
30.160.249.94	Find precise map location of 30.160.249.94

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