231.251.99 is a class C of IPs

Sample IPs from the class C 231.251.99

231.251.99.228	View precise location of 231.251.99.228 on the map!
231.251.99.146	View precise location of 231.251.99.146 on the map!
231.251.99.201	View precise location of 231.251.99.201 on the map!
231.251.99.203	View precise location of 231.251.99.203 on the map!
231.251.99.174	View precise location of 231.251.99.174 on the map!
231.251.99.197	View precise location of 231.251.99.197 on the map!
231.251.99.163	View precise location of 231.251.99.163 on the map!
231.251.99.231	View precise location of 231.251.99.231 on the map!
231.251.99.172	View precise location of 231.251.99.172 on the map!
231.251.99.253	View precise location of 231.251.99.253 on the map!
231.251.99.24	View precise location of 231.251.99.24 on the map!

10 Random IPs

33.43.143.51	Find precise map location of 33.43.143.51
201.207.110.242	Find precise map location of 201.207.110.242
151.1.219.44	Find precise map location of 151.1.219.44
93.57.145.68	Find precise map location of 93.57.145.68
105.120.213.205	Find precise map location of 105.120.213.205
157.92.195.229	Find precise map location of 157.92.195.229
133.250.198.181	Find precise map location of 133.250.198.181
125.190.51.181	Find precise map location of 125.190.51.181
20.53.8.105	Find precise map location of 20.53.8.105
167.97.96.111	Find precise map location of 167.97.96.111
214.227.141.79	Find precise map location of 214.227.141.79

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