18.3.221 is a class C of IPs

Sample IPs from the class C 18.3.221

18.3.221.149	View precise location of 18.3.221.149 on the map!
18.3.221.242	View precise location of 18.3.221.242 on the map!
18.3.221.227	View precise location of 18.3.221.227 on the map!
18.3.221.149	View precise location of 18.3.221.149 on the map!
18.3.221.227	View precise location of 18.3.221.227 on the map!
18.3.221.75	View precise location of 18.3.221.75 on the map!
18.3.221.96	View precise location of 18.3.221.96 on the map!
18.3.221.227	View precise location of 18.3.221.227 on the map!
18.3.221.168	View precise location of 18.3.221.168 on the map!
18.3.221.126	View precise location of 18.3.221.126 on the map!
18.3.221.40	View precise location of 18.3.221.40 on the map!

10 Random IPs

174.216.173.63	Find precise map location of 174.216.173.63
143.82.88.245	Find precise map location of 143.82.88.245
235.92.79.177	Find precise map location of 235.92.79.177
196.11.135.99	Find precise map location of 196.11.135.99
45.217.182.22	Find precise map location of 45.217.182.22
240.6.83.84	Find precise map location of 240.6.83.84
55.202.140.243	Find precise map location of 55.202.140.243
112.56.135.140	Find precise map location of 112.56.135.140
220.63.152.184	Find precise map location of 220.63.152.184
250.31.22.197	Find precise map location of 250.31.22.197
103.245.247.182	Find precise map location of 103.245.247.182

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