123.31.100 is a class C of IPs

Sample IPs from the class C 123.31.100

123.31.100.99	View precise location of 123.31.100.99 on the map!
123.31.100.162	View precise location of 123.31.100.162 on the map!
123.31.100.167	View precise location of 123.31.100.167 on the map!
123.31.100.180	View precise location of 123.31.100.180 on the map!
123.31.100.217	View precise location of 123.31.100.217 on the map!
123.31.100.163	View precise location of 123.31.100.163 on the map!
123.31.100.163	View precise location of 123.31.100.163 on the map!
123.31.100.94	View precise location of 123.31.100.94 on the map!
123.31.100.144	View precise location of 123.31.100.144 on the map!
123.31.100.100	View precise location of 123.31.100.100 on the map!
123.31.100.32	View precise location of 123.31.100.32 on the map!

10 Random IPs

68.37.9.119	Find precise map location of 68.37.9.119
102.64.9.28	Find precise map location of 102.64.9.28
129.71.60.160	Find precise map location of 129.71.60.160
59.140.198.116	Find precise map location of 59.140.198.116
230.120.184.192	Find precise map location of 230.120.184.192
167.223.209.87	Find precise map location of 167.223.209.87
163.94.7.239	Find precise map location of 163.94.7.239
137.67.41.213	Find precise map location of 137.67.41.213
55.59.117.38	Find precise map location of 55.59.117.38
49.15.58.66	Find precise map location of 49.15.58.66
251.224.140.105	Find precise map location of 251.224.140.105

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