172.20.128 is a class C of IPs

Sample IPs from the class C 172.20.128

172.20.128.253	View precise location of 172.20.128.253 on the map!
172.20.128.210	View precise location of 172.20.128.210 on the map!
172.20.128.108	View precise location of 172.20.128.108 on the map!
172.20.128.235	View precise location of 172.20.128.235 on the map!
172.20.128.133	View precise location of 172.20.128.133 on the map!
172.20.128.241	View precise location of 172.20.128.241 on the map!
172.20.128.7	View precise location of 172.20.128.7 on the map!
172.20.128.187	View precise location of 172.20.128.187 on the map!
172.20.128.210	View precise location of 172.20.128.210 on the map!
172.20.128.38	View precise location of 172.20.128.38 on the map!
172.20.128.182	View precise location of 172.20.128.182 on the map!

10 Random IPs

130.102.38.20	Find precise map location of 130.102.38.20
204.198.80.113	Find precise map location of 204.198.80.113
39.70.5.150	Find precise map location of 39.70.5.150
83.92.151.68	Find precise map location of 83.92.151.68
178.113.160.116	Find precise map location of 178.113.160.116
176.154.42.42	Find precise map location of 176.154.42.42
102.173.185.216	Find precise map location of 102.173.185.216
202.27.47.25	Find precise map location of 202.27.47.25
120.34.179.153	Find precise map location of 120.34.179.153
57.148.164.161	Find precise map location of 57.148.164.161
137.226.171.133	Find precise map location of 137.226.171.133

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