146.55.21 is a class C of IPs

Sample IPs from the class C 146.55.21

146.55.21.79	View precise location of 146.55.21.79 on the map!
146.55.21.5	View precise location of 146.55.21.5 on the map!
146.55.21.21	View precise location of 146.55.21.21 on the map!
146.55.21.147	View precise location of 146.55.21.147 on the map!
146.55.21.151	View precise location of 146.55.21.151 on the map!
146.55.21.154	View precise location of 146.55.21.154 on the map!
146.55.21.122	View precise location of 146.55.21.122 on the map!
146.55.21.85	View precise location of 146.55.21.85 on the map!
146.55.21.32	View precise location of 146.55.21.32 on the map!
146.55.21.164	View precise location of 146.55.21.164 on the map!
146.55.21.127	View precise location of 146.55.21.127 on the map!

10 Random IPs

159.203.207.206	Find precise map location of 159.203.207.206
116.53.136.188	Find precise map location of 116.53.136.188
100.35.183.114	Find precise map location of 100.35.183.114
187.49.182.172	Find precise map location of 187.49.182.172
149.107.148.137	Find precise map location of 149.107.148.137
164.179.198.96	Find precise map location of 164.179.198.96
231.183.45.222	Find precise map location of 231.183.45.222
242.153.206.71	Find precise map location of 242.153.206.71
30.185.129.184	Find precise map location of 30.185.129.184
51.254.213.132	Find precise map location of 51.254.213.132
235.52.24.161	Find precise map location of 235.52.24.161

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