18.16.240 is a class C of IPs

Sample IPs from the class C 18.16.240

18.16.240.227	View precise location of 18.16.240.227 on the map!
18.16.240.141	View precise location of 18.16.240.141 on the map!
18.16.240.18	View precise location of 18.16.240.18 on the map!
18.16.240.38	View precise location of 18.16.240.38 on the map!
18.16.240.194	View precise location of 18.16.240.194 on the map!
18.16.240.250	View precise location of 18.16.240.250 on the map!
18.16.240.67	View precise location of 18.16.240.67 on the map!
18.16.240.91	View precise location of 18.16.240.91 on the map!
18.16.240.38	View precise location of 18.16.240.38 on the map!
18.16.240.203	View precise location of 18.16.240.203 on the map!
18.16.240.9	View precise location of 18.16.240.9 on the map!

10 Random IPs

66.243.131.22	Find precise map location of 66.243.131.22
187.88.37.18	Find precise map location of 187.88.37.18
171.139.34.158	Find precise map location of 171.139.34.158
185.9.234.111	Find precise map location of 185.9.234.111
220.204.174.189	Find precise map location of 220.204.174.189
46.17.102.179	Find precise map location of 46.17.102.179
57.41.50.226	Find precise map location of 57.41.50.226
182.189.191.117	Find precise map location of 182.189.191.117
109.88.102.69	Find precise map location of 109.88.102.69
59.59.252.52	Find precise map location of 59.59.252.52
193.161.3.12	Find precise map location of 193.161.3.12

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