203.231.18 is a class C of IPs

Sample IPs from the class C 203.231.18

203.231.18.198	View precise location of 203.231.18.198 on the map!
203.231.18.226	View precise location of 203.231.18.226 on the map!
203.231.18.75	View precise location of 203.231.18.75 on the map!
203.231.18.178	View precise location of 203.231.18.178 on the map!
203.231.18.251	View precise location of 203.231.18.251 on the map!
203.231.18.134	View precise location of 203.231.18.134 on the map!
203.231.18.106	View precise location of 203.231.18.106 on the map!
203.231.18.90	View precise location of 203.231.18.90 on the map!
203.231.18.246	View precise location of 203.231.18.246 on the map!
203.231.18.140	View precise location of 203.231.18.140 on the map!
203.231.18.9	View precise location of 203.231.18.9 on the map!

10 Random IPs

179.234.124.27	Find precise map location of 179.234.124.27
158.5.159.152	Find precise map location of 158.5.159.152
226.185.84.87	Find precise map location of 226.185.84.87
169.45.98.54	Find precise map location of 169.45.98.54
129.245.86.255	Find precise map location of 129.245.86.255
254.5.32.105	Find precise map location of 254.5.32.105
97.46.91.56	Find precise map location of 97.46.91.56
252.85.81.12	Find precise map location of 252.85.81.12
86.151.39.52	Find precise map location of 86.151.39.52
2.174.42.3	Find precise map location of 2.174.42.3
209.59.17.244	Find precise map location of 209.59.17.244

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