181.81.66 is a class C of IPs

Sample IPs from the class C 181.81.66

181.81.66.112	View precise location of 181.81.66.112 on the map!
181.81.66.92	View precise location of 181.81.66.92 on the map!
181.81.66.84	View precise location of 181.81.66.84 on the map!
181.81.66.39	View precise location of 181.81.66.39 on the map!
181.81.66.100	View precise location of 181.81.66.100 on the map!
181.81.66.51	View precise location of 181.81.66.51 on the map!
181.81.66.79	View precise location of 181.81.66.79 on the map!
181.81.66.235	View precise location of 181.81.66.235 on the map!
181.81.66.79	View precise location of 181.81.66.79 on the map!
181.81.66.126	View precise location of 181.81.66.126 on the map!
181.81.66.186	View precise location of 181.81.66.186 on the map!

10 Random IPs

164.47.200.96	Find precise map location of 164.47.200.96
101.164.42.90	Find precise map location of 101.164.42.90
177.87.92.144	Find precise map location of 177.87.92.144
54.117.31.165	Find precise map location of 54.117.31.165
83.185.223.24	Find precise map location of 83.185.223.24
149.61.41.104	Find precise map location of 149.61.41.104
23.227.106.213	Find precise map location of 23.227.106.213
66.35.40.217	Find precise map location of 66.35.40.217
200.196.150.212	Find precise map location of 200.196.150.212
34.91.212.114	Find precise map location of 34.91.212.114
220.174.201.87	Find precise map location of 220.174.201.87

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