18.53.21 is a class C of IPs

Sample IPs from the class C 18.53.21

18.53.21.198	View precise location of 18.53.21.198 on the map!
18.53.21.248	View precise location of 18.53.21.248 on the map!
18.53.21.247	View precise location of 18.53.21.247 on the map!
18.53.21.80	View precise location of 18.53.21.80 on the map!
18.53.21.192	View precise location of 18.53.21.192 on the map!
18.53.21.59	View precise location of 18.53.21.59 on the map!
18.53.21.114	View precise location of 18.53.21.114 on the map!
18.53.21.153	View precise location of 18.53.21.153 on the map!
18.53.21.108	View precise location of 18.53.21.108 on the map!
18.53.21.73	View precise location of 18.53.21.73 on the map!
18.53.21.216	View precise location of 18.53.21.216 on the map!

10 Random IPs

247.12.248.172	Find precise map location of 247.12.248.172
247.108.184.218	Find precise map location of 247.108.184.218
212.224.207.250	Find precise map location of 212.224.207.250
209.86.229.64	Find precise map location of 209.86.229.64
71.125.129.206	Find precise map location of 71.125.129.206
158.181.193.205	Find precise map location of 158.181.193.205
38.137.193.220	Find precise map location of 38.137.193.220
78.60.2.213	Find precise map location of 78.60.2.213
242.254.214.61	Find precise map location of 242.254.214.61
121.202.107.180	Find precise map location of 121.202.107.180
168.26.224.178	Find precise map location of 168.26.224.178

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