251.22.81 is a class C of IPs

Sample IPs from the class C 251.22.81

251.22.81.133	View precise location of 251.22.81.133 on the map!
251.22.81.48	View precise location of 251.22.81.48 on the map!
251.22.81.116	View precise location of 251.22.81.116 on the map!
251.22.81.156	View precise location of 251.22.81.156 on the map!
251.22.81.187	View precise location of 251.22.81.187 on the map!
251.22.81.133	View precise location of 251.22.81.133 on the map!
251.22.81.151	View precise location of 251.22.81.151 on the map!
251.22.81.161	View precise location of 251.22.81.161 on the map!
251.22.81.248	View precise location of 251.22.81.248 on the map!
251.22.81.143	View precise location of 251.22.81.143 on the map!
251.22.81.128	View precise location of 251.22.81.128 on the map!

10 Random IPs

102.123.161.139	Find precise map location of 102.123.161.139
138.197.181.194	Find precise map location of 138.197.181.194
164.97.149.233	Find precise map location of 164.97.149.233
63.241.81.39	Find precise map location of 63.241.81.39
54.239.28.215	Find precise map location of 54.239.28.215
185.153.197.151	Find precise map location of 185.153.197.151
66.34.27.48	Find precise map location of 66.34.27.48
213.162.79.67	Find precise map location of 213.162.79.67
132.108.109.89	Find precise map location of 132.108.109.89
186.162.228.190	Find precise map location of 186.162.228.190
249.208.39.234	Find precise map location of 249.208.39.234

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