91.48.21 is a class C of IPs

Sample IPs from the class C 91.48.21

91.48.21.82	View precise location of 91.48.21.82 on the map!
91.48.21.225	View precise location of 91.48.21.225 on the map!
91.48.21.185	View precise location of 91.48.21.185 on the map!
91.48.21.209	View precise location of 91.48.21.209 on the map!
91.48.21.196	View precise location of 91.48.21.196 on the map!
91.48.21.177	View precise location of 91.48.21.177 on the map!
91.48.21.34	View precise location of 91.48.21.34 on the map!
91.48.21.163	View precise location of 91.48.21.163 on the map!
91.48.21.252	View precise location of 91.48.21.252 on the map!
91.48.21.238	View precise location of 91.48.21.238 on the map!
91.48.21.11	View precise location of 91.48.21.11 on the map!

10 Random IPs

64.219.106.248	Find precise map location of 64.219.106.248
195.249.210.81	Find precise map location of 195.249.210.81
56.218.234.15	Find precise map location of 56.218.234.15
231.153.35.239	Find precise map location of 231.153.35.239
112.164.25.239	Find precise map location of 112.164.25.239
147.211.128.236	Find precise map location of 147.211.128.236
114.108.252.206	Find precise map location of 114.108.252.206
75.173.255.22	Find precise map location of 75.173.255.22
239.243.191.179	Find precise map location of 239.243.191.179
82.130.151.45	Find precise map location of 82.130.151.45
82.82.162.208	Find precise map location of 82.82.162.208

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