18.156.181 is a class C of IPs

Sample IPs from the class C 18.156.181

18.156.181.15	View precise location of 18.156.181.15 on the map!
18.156.181.52	View precise location of 18.156.181.52 on the map!
18.156.181.47	View precise location of 18.156.181.47 on the map!
18.156.181.139	View precise location of 18.156.181.139 on the map!
18.156.181.103	View precise location of 18.156.181.103 on the map!
18.156.181.220	View precise location of 18.156.181.220 on the map!
18.156.181.52	View precise location of 18.156.181.52 on the map!
18.156.181.119	View precise location of 18.156.181.119 on the map!
18.156.181.197	View precise location of 18.156.181.197 on the map!
18.156.181.166	View precise location of 18.156.181.166 on the map!
18.156.181.121	View precise location of 18.156.181.121 on the map!

10 Random IPs

89.146.138.90	Find precise map location of 89.146.138.90
254.237.14.158	Find precise map location of 254.237.14.158
172.34.148.136	Find precise map location of 172.34.148.136
167.180.180.231	Find precise map location of 167.180.180.231
225.63.236.216	Find precise map location of 225.63.236.216
161.200.212.74	Find precise map location of 161.200.212.74
59.187.212.221	Find precise map location of 59.187.212.221
187.139.127.242	Find precise map location of 187.139.127.242
161.16.209.214	Find precise map location of 161.16.209.214
2.118.236.173	Find precise map location of 2.118.236.173
82.49.67.47	Find precise map location of 82.49.67.47

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