221.23.40 is a class C of IPs

Sample IPs from the class C 221.23.40

221.23.40.228	View precise location of 221.23.40.228 on the map!
221.23.40.33	View precise location of 221.23.40.33 on the map!
221.23.40.222	View precise location of 221.23.40.222 on the map!
221.23.40.168	View precise location of 221.23.40.168 on the map!
221.23.40.20	View precise location of 221.23.40.20 on the map!
221.23.40.22	View precise location of 221.23.40.22 on the map!
221.23.40.40	View precise location of 221.23.40.40 on the map!
221.23.40.175	View precise location of 221.23.40.175 on the map!
221.23.40.247	View precise location of 221.23.40.247 on the map!
221.23.40.72	View precise location of 221.23.40.72 on the map!
221.23.40.46	View precise location of 221.23.40.46 on the map!

10 Random IPs

142.55.194.111	Find precise map location of 142.55.194.111
87.6.197.230	Find precise map location of 87.6.197.230
148.198.121.159	Find precise map location of 148.198.121.159
12.158.74.158	Find precise map location of 12.158.74.158
39.63.170.178	Find precise map location of 39.63.170.178
71.166.40.102	Find precise map location of 71.166.40.102
157.197.97.99	Find precise map location of 157.197.97.99
146.208.23.137	Find precise map location of 146.208.23.137
59.86.122.166	Find precise map location of 59.86.122.166
155.155.253.33	Find precise map location of 155.155.253.33
117.20.121.68	Find precise map location of 117.20.121.68

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