21.200 is a class B of IPs

Sample IPs from the class B 21.200

21.200.73.53	View precise location of 21.200.73.53 on the map!
21.200.121.193	View precise location of 21.200.121.193 on the map!
21.200.190.80	View precise location of 21.200.190.80 on the map!
21.200.37.51	View precise location of 21.200.37.51 on the map!
21.200.90.168	View precise location of 21.200.90.168 on the map!
21.200.96.131	View precise location of 21.200.96.131 on the map!
21.200.219.63	View precise location of 21.200.219.63 on the map!
21.200.34.217	View precise location of 21.200.34.217 on the map!
21.200.12.74	View precise location of 21.200.12.74 on the map!
21.200.184.250	View precise location of 21.200.184.250 on the map!
21.200.237.53	View precise location of 21.200.237.53 on the map!

10 Random IPs

195.120.65.109	Find precise map location of 195.120.65.109
42.17.202.175	Find precise map location of 42.17.202.175
95.20.152.68	Find precise map location of 95.20.152.68
250.62.250.25	Find precise map location of 250.62.250.25
107.184.111.129	Find precise map location of 107.184.111.129
251.10.61.50	Find precise map location of 251.10.61.50
247.198.12.2	Find precise map location of 247.198.12.2
3.71.248.147	Find precise map location of 3.71.248.147
206.44.109.184	Find precise map location of 206.44.109.184
238.78.87.219	Find precise map location of 238.78.87.219
201.195.35.34	Find precise map location of 201.195.35.34

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