157.121.31 is a class C of IPs

Sample IPs from the class C 157.121.31

157.121.31.165	View precise location of 157.121.31.165 on the map!
157.121.31.75	View precise location of 157.121.31.75 on the map!
157.121.31.238	View precise location of 157.121.31.238 on the map!
157.121.31.220	View precise location of 157.121.31.220 on the map!
157.121.31.71	View precise location of 157.121.31.71 on the map!
157.121.31.49	View precise location of 157.121.31.49 on the map!
157.121.31.20	View precise location of 157.121.31.20 on the map!
157.121.31.193	View precise location of 157.121.31.193 on the map!
157.121.31.183	View precise location of 157.121.31.183 on the map!
157.121.31.92	View precise location of 157.121.31.92 on the map!
157.121.31.244	View precise location of 157.121.31.244 on the map!

10 Random IPs

137.203.244.78	Find precise map location of 137.203.244.78
191.173.30.179	Find precise map location of 191.173.30.179
10.191.52.126	Find precise map location of 10.191.52.126
113.162.197.252	Find precise map location of 113.162.197.252
200.88.12.173	Find precise map location of 200.88.12.173
231.23.76.66	Find precise map location of 231.23.76.66
27.210.198.99	Find precise map location of 27.210.198.99
1.249.32.181	Find precise map location of 1.249.32.181
122.110.134.110	Find precise map location of 122.110.134.110
1.165.82.58	Find precise map location of 1.165.82.58
221.254.220.198	Find precise map location of 221.254.220.198

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