159.81.212 is a class C of IPs

Sample IPs from the class C 159.81.212

159.81.212.245	View precise location of 159.81.212.245 on the map!
159.81.212.231	View precise location of 159.81.212.231 on the map!
159.81.212.243	View precise location of 159.81.212.243 on the map!
159.81.212.52	View precise location of 159.81.212.52 on the map!
159.81.212.89	View precise location of 159.81.212.89 on the map!
159.81.212.130	View precise location of 159.81.212.130 on the map!
159.81.212.169	View precise location of 159.81.212.169 on the map!
159.81.212.65	View precise location of 159.81.212.65 on the map!
159.81.212.96	View precise location of 159.81.212.96 on the map!
159.81.212.76	View precise location of 159.81.212.76 on the map!
159.81.212.158	View precise location of 159.81.212.158 on the map!

10 Random IPs

242.66.163.108	Find precise map location of 242.66.163.108
19.160.63.209	Find precise map location of 19.160.63.209
106.154.75.71	Find precise map location of 106.154.75.71
160.233.55.155	Find precise map location of 160.233.55.155
109.174.197.54	Find precise map location of 109.174.197.54
189.102.192.61	Find precise map location of 189.102.192.61
9.168.172.222	Find precise map location of 9.168.172.222
155.30.152.71	Find precise map location of 155.30.152.71
255.11.146.163	Find precise map location of 255.11.146.163
120.74.72.208	Find precise map location of 120.74.72.208
11.89.185.145	Find precise map location of 11.89.185.145

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