156.81.128 is a class C of IPs

Sample IPs from the class C 156.81.128

156.81.128.55	View precise location of 156.81.128.55 on the map!
156.81.128.138	View precise location of 156.81.128.138 on the map!
156.81.128.196	View precise location of 156.81.128.196 on the map!
156.81.128.188	View precise location of 156.81.128.188 on the map!
156.81.128.241	View precise location of 156.81.128.241 on the map!
156.81.128.236	View precise location of 156.81.128.236 on the map!
156.81.128.4	View precise location of 156.81.128.4 on the map!
156.81.128.100	View precise location of 156.81.128.100 on the map!
156.81.128.222	View precise location of 156.81.128.222 on the map!
156.81.128.24	View precise location of 156.81.128.24 on the map!
156.81.128.11	View precise location of 156.81.128.11 on the map!

10 Random IPs

171.194.234.126	Find precise map location of 171.194.234.126
255.197.224.39	Find precise map location of 255.197.224.39
179.11.38.1	Find precise map location of 179.11.38.1
227.188.238.204	Find precise map location of 227.188.238.204
77.192.93.34	Find precise map location of 77.192.93.34
23.152.89.78	Find precise map location of 23.152.89.78
171.185.109.73	Find precise map location of 171.185.109.73
12.44.106.68	Find precise map location of 12.44.106.68
117.205.171.5	Find precise map location of 117.205.171.5
46.168.10.86	Find precise map location of 46.168.10.86
46.92.87.89	Find precise map location of 46.92.87.89

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