18.22.21 is a class C of IPs

Sample IPs from the class C 18.22.21

18.22.21.5	View precise location of 18.22.21.5 on the map!
18.22.21.62	View precise location of 18.22.21.62 on the map!
18.22.21.235	View precise location of 18.22.21.235 on the map!
18.22.21.234	View precise location of 18.22.21.234 on the map!
18.22.21.26	View precise location of 18.22.21.26 on the map!
18.22.21.9	View precise location of 18.22.21.9 on the map!
18.22.21.99	View precise location of 18.22.21.99 on the map!
18.22.21.234	View precise location of 18.22.21.234 on the map!
18.22.21.112	View precise location of 18.22.21.112 on the map!
18.22.21.249	View precise location of 18.22.21.249 on the map!
18.22.21.182	View precise location of 18.22.21.182 on the map!

10 Random IPs

205.233.59.99	Find precise map location of 205.233.59.99
176.51.251.101	Find precise map location of 176.51.251.101
239.71.65.205	Find precise map location of 239.71.65.205
177.49.13.235	Find precise map location of 177.49.13.235
218.193.7.17	Find precise map location of 218.193.7.17
213.98.3.221	Find precise map location of 213.98.3.221
29.7.137.160	Find precise map location of 29.7.137.160
58.147.178.52	Find precise map location of 58.147.178.52
159.7.62.152	Find precise map location of 159.7.62.152
250.248.75.159	Find precise map location of 250.248.75.159
212.12.65.66	Find precise map location of 212.12.65.66

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