52.21.42 is a class C of IPs

Sample IPs from the class C 52.21.42

52.21.42.184	View precise location of 52.21.42.184 on the map!
52.21.42.171	View precise location of 52.21.42.171 on the map!
52.21.42.208	View precise location of 52.21.42.208 on the map!
52.21.42.91	View precise location of 52.21.42.91 on the map!
52.21.42.232	View precise location of 52.21.42.232 on the map!
52.21.42.147	View precise location of 52.21.42.147 on the map!
52.21.42.39	View precise location of 52.21.42.39 on the map!
52.21.42.113	View precise location of 52.21.42.113 on the map!
52.21.42.90	View precise location of 52.21.42.90 on the map!
52.21.42.16	View precise location of 52.21.42.16 on the map!
52.21.42.56	View precise location of 52.21.42.56 on the map!

10 Random IPs

235.238.13.244	Find precise map location of 235.238.13.244
203.143.210.251	Find precise map location of 203.143.210.251
197.54.196.155	Find precise map location of 197.54.196.155
29.236.151.240	Find precise map location of 29.236.151.240
58.152.157.204	Find precise map location of 58.152.157.204
190.155.150.90	Find precise map location of 190.155.150.90
107.248.251.149	Find precise map location of 107.248.251.149
153.10.107.119	Find precise map location of 153.10.107.119
89.104.1.107	Find precise map location of 89.104.1.107
45.157.66.233	Find precise map location of 45.157.66.233
104.11.180.199	Find precise map location of 104.11.180.199

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