81.189.243 is a class C of IPs

Sample IPs from the class C 81.189.243

81.189.243.37	View precise location of 81.189.243.37 on the map!
81.189.243.107	View precise location of 81.189.243.107 on the map!
81.189.243.234	View precise location of 81.189.243.234 on the map!
81.189.243.176	View precise location of 81.189.243.176 on the map!
81.189.243.77	View precise location of 81.189.243.77 on the map!
81.189.243.224	View precise location of 81.189.243.224 on the map!
81.189.243.15	View precise location of 81.189.243.15 on the map!
81.189.243.108	View precise location of 81.189.243.108 on the map!
81.189.243.250	View precise location of 81.189.243.250 on the map!
81.189.243.135	View precise location of 81.189.243.135 on the map!
81.189.243.51	View precise location of 81.189.243.51 on the map!

10 Random IPs

187.113.64.96	Find precise map location of 187.113.64.96
187.156.19.134	Find precise map location of 187.156.19.134
102.1.69.239	Find precise map location of 102.1.69.239
251.139.247.116	Find precise map location of 251.139.247.116
159.24.153.97	Find precise map location of 159.24.153.97
175.13.185.199	Find precise map location of 175.13.185.199
9.27.47.89	Find precise map location of 9.27.47.89
185.179.119.246	Find precise map location of 185.179.119.246
48.251.24.149	Find precise map location of 48.251.24.149
211.41.124.33	Find precise map location of 211.41.124.33
60.52.35.36	Find precise map location of 60.52.35.36

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