129.81.56 is a class C of IPs

Sample IPs from the class C 129.81.56

129.81.56.208	View precise location of 129.81.56.208 on the map!
129.81.56.30	View precise location of 129.81.56.30 on the map!
129.81.56.123	View precise location of 129.81.56.123 on the map!
129.81.56.143	View precise location of 129.81.56.143 on the map!
129.81.56.159	View precise location of 129.81.56.159 on the map!
129.81.56.102	View precise location of 129.81.56.102 on the map!
129.81.56.4	View precise location of 129.81.56.4 on the map!
129.81.56.183	View precise location of 129.81.56.183 on the map!
129.81.56.235	View precise location of 129.81.56.235 on the map!
129.81.56.239	View precise location of 129.81.56.239 on the map!
129.81.56.24	View precise location of 129.81.56.24 on the map!

10 Random IPs

206.171.79.82	Find precise map location of 206.171.79.82
138.77.132.9	Find precise map location of 138.77.132.9
133.23.69.126	Find precise map location of 133.23.69.126
192.119.230.164	Find precise map location of 192.119.230.164
224.146.221.167	Find precise map location of 224.146.221.167
90.120.97.89	Find precise map location of 90.120.97.89
230.6.212.46	Find precise map location of 230.6.212.46
104.106.102.47	Find precise map location of 104.106.102.47
129.44.35.218	Find precise map location of 129.44.35.218
220.210.204.164	Find precise map location of 220.210.204.164
92.168.194.65	Find precise map location of 92.168.194.65

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