81.123.19 is a class C of IPs

Sample IPs from the class C 81.123.19

81.123.19.11	View precise location of 81.123.19.11 on the map!
81.123.19.143	View precise location of 81.123.19.143 on the map!
81.123.19.66	View precise location of 81.123.19.66 on the map!
81.123.19.122	View precise location of 81.123.19.122 on the map!
81.123.19.43	View precise location of 81.123.19.43 on the map!
81.123.19.26	View precise location of 81.123.19.26 on the map!
81.123.19.7	View precise location of 81.123.19.7 on the map!
81.123.19.190	View precise location of 81.123.19.190 on the map!
81.123.19.197	View precise location of 81.123.19.197 on the map!
81.123.19.59	View precise location of 81.123.19.59 on the map!
81.123.19.55	View precise location of 81.123.19.55 on the map!

10 Random IPs

163.231.10.203	Find precise map location of 163.231.10.203
106.184.136.237	Find precise map location of 106.184.136.237
43.171.129.150	Find precise map location of 43.171.129.150
5.144.71.167	Find precise map location of 5.144.71.167
113.17.7.140	Find precise map location of 113.17.7.140
5.243.138.81	Find precise map location of 5.243.138.81
120.252.60.179	Find precise map location of 120.252.60.179
153.1.48.159	Find precise map location of 153.1.48.159
153.136.112.147	Find precise map location of 153.136.112.147
167.129.156.188	Find precise map location of 167.129.156.188
154.191.250.155	Find precise map location of 154.191.250.155

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