166.87.21 is a class C of IPs

Sample IPs from the class C 166.87.21

166.87.21.89	View precise location of 166.87.21.89 on the map!
166.87.21.7	View precise location of 166.87.21.7 on the map!
166.87.21.38	View precise location of 166.87.21.38 on the map!
166.87.21.17	View precise location of 166.87.21.17 on the map!
166.87.21.57	View precise location of 166.87.21.57 on the map!
166.87.21.40	View precise location of 166.87.21.40 on the map!
166.87.21.18	View precise location of 166.87.21.18 on the map!
166.87.21.234	View precise location of 166.87.21.234 on the map!
166.87.21.202	View precise location of 166.87.21.202 on the map!
166.87.21.208	View precise location of 166.87.21.208 on the map!
166.87.21.62	View precise location of 166.87.21.62 on the map!

10 Random IPs

227.3.149.133	Find precise map location of 227.3.149.133
92.83.19.174	Find precise map location of 92.83.19.174
212.32.233.222	Find precise map location of 212.32.233.222
122.24.128.232	Find precise map location of 122.24.128.232
172.203.60.28	Find precise map location of 172.203.60.28
203.181.163.198	Find precise map location of 203.181.163.198
177.220.130.119	Find precise map location of 177.220.130.119
122.159.47.91	Find precise map location of 122.159.47.91
14.222.79.217	Find precise map location of 14.222.79.217
177.53.229.181	Find precise map location of 177.53.229.181
135.227.146.241	Find precise map location of 135.227.146.241

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