255.99.128 is a class C of IPs

Sample IPs from the class C 255.99.128

255.99.128.52	View precise location of 255.99.128.52 on the map!
255.99.128.229	View precise location of 255.99.128.229 on the map!
255.99.128.101	View precise location of 255.99.128.101 on the map!
255.99.128.47	View precise location of 255.99.128.47 on the map!
255.99.128.125	View precise location of 255.99.128.125 on the map!
255.99.128.196	View precise location of 255.99.128.196 on the map!
255.99.128.91	View precise location of 255.99.128.91 on the map!
255.99.128.43	View precise location of 255.99.128.43 on the map!
255.99.128.117	View precise location of 255.99.128.117 on the map!
255.99.128.36	View precise location of 255.99.128.36 on the map!
255.99.128.106	View precise location of 255.99.128.106 on the map!

10 Random IPs

77.168.234.244	Find precise map location of 77.168.234.244
102.62.72.2	Find precise map location of 102.62.72.2
17.64.15.72	Find precise map location of 17.64.15.72
254.108.64.101	Find precise map location of 254.108.64.101
128.164.108.229	Find precise map location of 128.164.108.229
202.39.118.101	Find precise map location of 202.39.118.101
202.235.112.118	Find precise map location of 202.235.112.118
52.165.224.200	Find precise map location of 52.165.224.200
181.201.154.61	Find precise map location of 181.201.154.61
177.86.124.134	Find precise map location of 177.86.124.134
192.139.229.53	Find precise map location of 192.139.229.53

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