138.54.81 is a class C of IPs

Sample IPs from the class C 138.54.81

138.54.81.43	View precise location of 138.54.81.43 on the map!
138.54.81.215	View precise location of 138.54.81.215 on the map!
138.54.81.153	View precise location of 138.54.81.153 on the map!
138.54.81.124	View precise location of 138.54.81.124 on the map!
138.54.81.184	View precise location of 138.54.81.184 on the map!
138.54.81.99	View precise location of 138.54.81.99 on the map!
138.54.81.202	View precise location of 138.54.81.202 on the map!
138.54.81.169	View precise location of 138.54.81.169 on the map!
138.54.81.47	View precise location of 138.54.81.47 on the map!
138.54.81.233	View precise location of 138.54.81.233 on the map!
138.54.81.168	View precise location of 138.54.81.168 on the map!

10 Random IPs

11.113.182.182	Find precise map location of 11.113.182.182
229.202.32.69	Find precise map location of 229.202.32.69
159.102.251.153	Find precise map location of 159.102.251.153
139.197.75.151	Find precise map location of 139.197.75.151
144.21.251.88	Find precise map location of 144.21.251.88
49.86.29.142	Find precise map location of 49.86.29.142
231.149.133.215	Find precise map location of 231.149.133.215
182.228.70.230	Find precise map location of 182.228.70.230
115.128.178.215	Find precise map location of 115.128.178.215
24.238.104.180	Find precise map location of 24.238.104.180
196.96.188.83	Find precise map location of 196.96.188.83

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