196.157.21 is a class C of IPs

Sample IPs from the class C 196.157.21

196.157.21.46	View precise location of 196.157.21.46 on the map!
196.157.21.159	View precise location of 196.157.21.159 on the map!
196.157.21.234	View precise location of 196.157.21.234 on the map!
196.157.21.40	View precise location of 196.157.21.40 on the map!
196.157.21.121	View precise location of 196.157.21.121 on the map!
196.157.21.226	View precise location of 196.157.21.226 on the map!
196.157.21.71	View precise location of 196.157.21.71 on the map!
196.157.21.68	View precise location of 196.157.21.68 on the map!
196.157.21.86	View precise location of 196.157.21.86 on the map!
196.157.21.109	View precise location of 196.157.21.109 on the map!
196.157.21.253	View precise location of 196.157.21.253 on the map!

10 Random IPs

255.49.50.46	Find precise map location of 255.49.50.46
62.222.144.6	Find precise map location of 62.222.144.6
188.32.189.233	Find precise map location of 188.32.189.233
224.12.63.9	Find precise map location of 224.12.63.9
117.127.97.50	Find precise map location of 117.127.97.50
177.20.237.251	Find precise map location of 177.20.237.251
151.142.234.166	Find precise map location of 151.142.234.166
34.158.65.59	Find precise map location of 34.158.65.59
111.113.48.73	Find precise map location of 111.113.48.73
83.7.199.93	Find precise map location of 83.7.199.93
94.169.46.31	Find precise map location of 94.169.46.31

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