255.156.20 is a class C of IPs

Sample IPs from the class C 255.156.20

255.156.20.176	View precise location of 255.156.20.176 on the map!
255.156.20.64	View precise location of 255.156.20.64 on the map!
255.156.20.87	View precise location of 255.156.20.87 on the map!
255.156.20.54	View precise location of 255.156.20.54 on the map!
255.156.20.64	View precise location of 255.156.20.64 on the map!
255.156.20.211	View precise location of 255.156.20.211 on the map!
255.156.20.185	View precise location of 255.156.20.185 on the map!
255.156.20.216	View precise location of 255.156.20.216 on the map!
255.156.20.36	View precise location of 255.156.20.36 on the map!
255.156.20.182	View precise location of 255.156.20.182 on the map!
255.156.20.39	View precise location of 255.156.20.39 on the map!

10 Random IPs

174.68.141.40	Find precise map location of 174.68.141.40
162.198.175.33	Find precise map location of 162.198.175.33
194.45.182.128	Find precise map location of 194.45.182.128
77.248.109.159	Find precise map location of 77.248.109.159
81.189.225.45	Find precise map location of 81.189.225.45
123.253.203.66	Find precise map location of 123.253.203.66
87.244.242.93	Find precise map location of 87.244.242.93
205.122.133.92	Find precise map location of 205.122.133.92
80.74.252.229	Find precise map location of 80.74.252.229
144.211.97.114	Find precise map location of 144.211.97.114
131.32.42.92	Find precise map location of 131.32.42.92

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