223.74.21 is a class C of IPs

Sample IPs from the class C 223.74.21

223.74.21.133	View precise location of 223.74.21.133 on the map!
223.74.21.182	View precise location of 223.74.21.182 on the map!
223.74.21.54	View precise location of 223.74.21.54 on the map!
223.74.21.240	View precise location of 223.74.21.240 on the map!
223.74.21.84	View precise location of 223.74.21.84 on the map!
223.74.21.96	View precise location of 223.74.21.96 on the map!
223.74.21.174	View precise location of 223.74.21.174 on the map!
223.74.21.25	View precise location of 223.74.21.25 on the map!
223.74.21.112	View precise location of 223.74.21.112 on the map!
223.74.21.90	View precise location of 223.74.21.90 on the map!
223.74.21.21	View precise location of 223.74.21.21 on the map!

10 Random IPs

122.183.31.43	Find precise map location of 122.183.31.43
57.39.181.133	Find precise map location of 57.39.181.133
157.253.62.54	Find precise map location of 157.253.62.54
150.181.36.89	Find precise map location of 150.181.36.89
134.127.204.8	Find precise map location of 134.127.204.8
142.249.196.232	Find precise map location of 142.249.196.232
187.197.22.88	Find precise map location of 187.197.22.88
184.32.243.233	Find precise map location of 184.32.243.233
40.13.12.182	Find precise map location of 40.13.12.182
41.209.206.151	Find precise map location of 41.209.206.151
33.223.194.152	Find precise map location of 33.223.194.152

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