216.143.181 is a class C of IPs

Sample IPs from the class C 216.143.181

216.143.181.171	View precise location of 216.143.181.171 on the map!
216.143.181.131	View precise location of 216.143.181.131 on the map!
216.143.181.1	View precise location of 216.143.181.1 on the map!
216.143.181.76	View precise location of 216.143.181.76 on the map!
216.143.181.134	View precise location of 216.143.181.134 on the map!
216.143.181.169	View precise location of 216.143.181.169 on the map!
216.143.181.170	View precise location of 216.143.181.170 on the map!
216.143.181.47	View precise location of 216.143.181.47 on the map!
216.143.181.32	View precise location of 216.143.181.32 on the map!
216.143.181.55	View precise location of 216.143.181.55 on the map!
216.143.181.135	View precise location of 216.143.181.135 on the map!

10 Random IPs

81.163.161.66	Find precise map location of 81.163.161.66
233.217.76.103	Find precise map location of 233.217.76.103
191.63.249.150	Find precise map location of 191.63.249.150
40.88.173.194	Find precise map location of 40.88.173.194
251.206.70.66	Find precise map location of 251.206.70.66
185.105.93.132	Find precise map location of 185.105.93.132
153.174.32.253	Find precise map location of 153.174.32.253
165.107.246.122	Find precise map location of 165.107.246.122
18.83.56.88	Find precise map location of 18.83.56.88
100.14.29.199	Find precise map location of 100.14.29.199
44.38.188.239	Find precise map location of 44.38.188.239

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