21.1.121 is a class C of IPs

Sample IPs from the class C 21.1.121

21.1.121.65	View precise location of 21.1.121.65 on the map!
21.1.121.40	View precise location of 21.1.121.40 on the map!
21.1.121.169	View precise location of 21.1.121.169 on the map!
21.1.121.178	View precise location of 21.1.121.178 on the map!
21.1.121.11	View precise location of 21.1.121.11 on the map!
21.1.121.237	View precise location of 21.1.121.237 on the map!
21.1.121.228	View precise location of 21.1.121.228 on the map!
21.1.121.179	View precise location of 21.1.121.179 on the map!
21.1.121.29	View precise location of 21.1.121.29 on the map!
21.1.121.98	View precise location of 21.1.121.98 on the map!
21.1.121.79	View precise location of 21.1.121.79 on the map!

10 Random IPs

175.227.115.38	Find precise map location of 175.227.115.38
148.105.91.4	Find precise map location of 148.105.91.4
23.98.119.125	Find precise map location of 23.98.119.125
166.56.100.69	Find precise map location of 166.56.100.69
249.190.90.164	Find precise map location of 249.190.90.164
131.76.252.10	Find precise map location of 131.76.252.10
67.1.90.203	Find precise map location of 67.1.90.203
182.41.234.49	Find precise map location of 182.41.234.49
114.76.44.173	Find precise map location of 114.76.44.173
99.100.74.13	Find precise map location of 99.100.74.13
69.16.97.105	Find precise map location of 69.16.97.105

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