20.51.231 is a class C of IPs

Sample IPs from the class C 20.51.231

20.51.231.171	View precise location of 20.51.231.171 on the map!
20.51.231.152	View precise location of 20.51.231.152 on the map!
20.51.231.78	View precise location of 20.51.231.78 on the map!
20.51.231.22	View precise location of 20.51.231.22 on the map!
20.51.231.149	View precise location of 20.51.231.149 on the map!
20.51.231.152	View precise location of 20.51.231.152 on the map!
20.51.231.106	View precise location of 20.51.231.106 on the map!
20.51.231.149	View precise location of 20.51.231.149 on the map!
20.51.231.186	View precise location of 20.51.231.186 on the map!
20.51.231.90	View precise location of 20.51.231.90 on the map!
20.51.231.84	View precise location of 20.51.231.84 on the map!

10 Random IPs

151.159.171.253	Find precise map location of 151.159.171.253
143.199.71.4	Find precise map location of 143.199.71.4
93.205.129.43	Find precise map location of 93.205.129.43
158.75.59.9	Find precise map location of 158.75.59.9
78.149.230.161	Find precise map location of 78.149.230.161
180.251.102.231	Find precise map location of 180.251.102.231
119.69.127.104	Find precise map location of 119.69.127.104
170.227.70.32	Find precise map location of 170.227.70.32
222.58.217.102	Find precise map location of 222.58.217.102
43.80.183.28	Find precise map location of 43.80.183.28
68.70.225.77	Find precise map location of 68.70.225.77

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