143.51.99 is a class C of IPs

Sample IPs from the class C 143.51.99

143.51.99.123	View precise location of 143.51.99.123 on the map!
143.51.99.186	View precise location of 143.51.99.186 on the map!
143.51.99.96	View precise location of 143.51.99.96 on the map!
143.51.99.38	View precise location of 143.51.99.38 on the map!
143.51.99.242	View precise location of 143.51.99.242 on the map!
143.51.99.178	View precise location of 143.51.99.178 on the map!
143.51.99.1	View precise location of 143.51.99.1 on the map!
143.51.99.81	View precise location of 143.51.99.81 on the map!
143.51.99.241	View precise location of 143.51.99.241 on the map!
143.51.99.29	View precise location of 143.51.99.29 on the map!
143.51.99.83	View precise location of 143.51.99.83 on the map!

10 Random IPs

29.162.34.57	Find precise map location of 29.162.34.57
7.163.109.215	Find precise map location of 7.163.109.215
34.229.132.219	Find precise map location of 34.229.132.219
184.3.57.136	Find precise map location of 184.3.57.136
64.105.227.235	Find precise map location of 64.105.227.235
146.123.14.45	Find precise map location of 146.123.14.45
105.28.96.243	Find precise map location of 105.28.96.243
156.245.102.75	Find precise map location of 156.245.102.75
75.198.248.151	Find precise map location of 75.198.248.151
41.16.46.11	Find precise map location of 41.16.46.11
249.66.152.209	Find precise map location of 249.66.152.209

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