18.51.20 is a class C of IPs

Sample IPs from the class C 18.51.20

18.51.20.241	View precise location of 18.51.20.241 on the map!
18.51.20.16	View precise location of 18.51.20.16 on the map!
18.51.20.144	View precise location of 18.51.20.144 on the map!
18.51.20.253	View precise location of 18.51.20.253 on the map!
18.51.20.66	View precise location of 18.51.20.66 on the map!
18.51.20.17	View precise location of 18.51.20.17 on the map!
18.51.20.26	View precise location of 18.51.20.26 on the map!
18.51.20.211	View precise location of 18.51.20.211 on the map!
18.51.20.74	View precise location of 18.51.20.74 on the map!
18.51.20.187	View precise location of 18.51.20.187 on the map!
18.51.20.93	View precise location of 18.51.20.93 on the map!

10 Random IPs

93.234.76.151	Find precise map location of 93.234.76.151
214.181.106.151	Find precise map location of 214.181.106.151
243.219.12.12	Find precise map location of 243.219.12.12
210.216.163.48	Find precise map location of 210.216.163.48
75.98.175.49	Find precise map location of 75.98.175.49
129.36.95.103	Find precise map location of 129.36.95.103
153.192.188.251	Find precise map location of 153.192.188.251
89.255.64.74	Find precise map location of 89.255.64.74
169.31.187.167	Find precise map location of 169.31.187.167
204.128.172.200	Find precise map location of 204.128.172.200
222.166.36.222	Find precise map location of 222.166.36.222

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