138.81.20 is a class C of IPs

Sample IPs from the class C 138.81.20

138.81.20.93	View precise location of 138.81.20.93 on the map!
138.81.20.248	View precise location of 138.81.20.248 on the map!
138.81.20.18	View precise location of 138.81.20.18 on the map!
138.81.20.127	View precise location of 138.81.20.127 on the map!
138.81.20.220	View precise location of 138.81.20.220 on the map!
138.81.20.186	View precise location of 138.81.20.186 on the map!
138.81.20.39	View precise location of 138.81.20.39 on the map!
138.81.20.8	View precise location of 138.81.20.8 on the map!
138.81.20.92	View precise location of 138.81.20.92 on the map!
138.81.20.164	View precise location of 138.81.20.164 on the map!
138.81.20.247	View precise location of 138.81.20.247 on the map!

10 Random IPs

157.72.167.111	Find precise map location of 157.72.167.111
145.51.194.147	Find precise map location of 145.51.194.147
59.45.159.208	Find precise map location of 59.45.159.208
115.92.11.158	Find precise map location of 115.92.11.158
73.168.1.234	Find precise map location of 73.168.1.234
2.210.166.249	Find precise map location of 2.210.166.249
74.15.17.154	Find precise map location of 74.15.17.154
108.225.254.9	Find precise map location of 108.225.254.9
217.191.140.176	Find precise map location of 217.191.140.176
30.16.247.184	Find precise map location of 30.16.247.184
196.242.216.26	Find precise map location of 196.242.216.26

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