143.223.137 is a class C of IPs

Sample IPs from the class C 143.223.137

143.223.137.81	View precise location of 143.223.137.81 on the map!
143.223.137.52	View precise location of 143.223.137.52 on the map!
143.223.137.11	View precise location of 143.223.137.11 on the map!
143.223.137.255	View precise location of 143.223.137.255 on the map!
143.223.137.60	View precise location of 143.223.137.60 on the map!
143.223.137.124	View precise location of 143.223.137.124 on the map!
143.223.137.201	View precise location of 143.223.137.201 on the map!
143.223.137.210	View precise location of 143.223.137.210 on the map!
143.223.137.210	View precise location of 143.223.137.210 on the map!
143.223.137.66	View precise location of 143.223.137.66 on the map!
143.223.137.73	View precise location of 143.223.137.73 on the map!

10 Random IPs

191.76.28.179	Find precise map location of 191.76.28.179
67.148.181.93	Find precise map location of 67.148.181.93
233.76.155.16	Find precise map location of 233.76.155.16
112.76.22.40	Find precise map location of 112.76.22.40
50.241.218.124	Find precise map location of 50.241.218.124
79.239.155.114	Find precise map location of 79.239.155.114
235.184.185.181	Find precise map location of 235.184.185.181
213.233.253.88	Find precise map location of 213.233.253.88
32.34.4.202	Find precise map location of 32.34.4.202
88.232.196.20	Find precise map location of 88.232.196.20
81.125.215.61	Find precise map location of 81.125.215.61

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