129.21.158 is a class C of IPs

Sample IPs from the class C 129.21.158

129.21.158.139	View precise location of 129.21.158.139 on the map!
129.21.158.162	View precise location of 129.21.158.162 on the map!
129.21.158.166	View precise location of 129.21.158.166 on the map!
129.21.158.159	View precise location of 129.21.158.159 on the map!
129.21.158.63	View precise location of 129.21.158.63 on the map!
129.21.158.82	View precise location of 129.21.158.82 on the map!
129.21.158.161	View precise location of 129.21.158.161 on the map!
129.21.158.139	View precise location of 129.21.158.139 on the map!
129.21.158.119	View precise location of 129.21.158.119 on the map!
129.21.158.159	View precise location of 129.21.158.159 on the map!
129.21.158.165	View precise location of 129.21.158.165 on the map!

10 Random IPs

149.43.132.74	Find precise map location of 149.43.132.74
89.216.81.229	Find precise map location of 89.216.81.229
12.208.90.94	Find precise map location of 12.208.90.94
184.111.194.103	Find precise map location of 184.111.194.103
254.136.146.103	Find precise map location of 254.136.146.103
15.23.35.132	Find precise map location of 15.23.35.132
85.48.79.87	Find precise map location of 85.48.79.87
70.6.183.230	Find precise map location of 70.6.183.230
117.36.228.244	Find precise map location of 117.36.228.244
221.238.50.217	Find precise map location of 221.238.50.217
38.180.3.230	Find precise map location of 38.180.3.230

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