181.20.206 is a class C of IPs

Sample IPs from the class C 181.20.206

181.20.206.97	View precise location of 181.20.206.97 on the map!
181.20.206.224	View precise location of 181.20.206.224 on the map!
181.20.206.184	View precise location of 181.20.206.184 on the map!
181.20.206.193	View precise location of 181.20.206.193 on the map!
181.20.206.93	View precise location of 181.20.206.93 on the map!
181.20.206.129	View precise location of 181.20.206.129 on the map!
181.20.206.191	View precise location of 181.20.206.191 on the map!
181.20.206.133	View precise location of 181.20.206.133 on the map!
181.20.206.80	View precise location of 181.20.206.80 on the map!
181.20.206.149	View precise location of 181.20.206.149 on the map!
181.20.206.10	View precise location of 181.20.206.10 on the map!

10 Random IPs

91.232.245.167	Find precise map location of 91.232.245.167
147.235.131.202	Find precise map location of 147.235.131.202
251.29.185.112	Find precise map location of 251.29.185.112
192.182.162.102	Find precise map location of 192.182.162.102
190.225.230.159	Find precise map location of 190.225.230.159
87.178.64.100	Find precise map location of 87.178.64.100
173.11.17.87	Find precise map location of 173.11.17.87
31.220.55.122	Find precise map location of 31.220.55.122
37.78.101.42	Find precise map location of 37.78.101.42
221.141.11.25	Find precise map location of 221.141.11.25
255.26.115.222	Find precise map location of 255.26.115.222

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