52.148.21 is a class C of IPs

Sample IPs from the class C 52.148.21

52.148.21.73	View precise location of 52.148.21.73 on the map!
52.148.21.201	View precise location of 52.148.21.201 on the map!
52.148.21.97	View precise location of 52.148.21.97 on the map!
52.148.21.5	View precise location of 52.148.21.5 on the map!
52.148.21.62	View precise location of 52.148.21.62 on the map!
52.148.21.222	View precise location of 52.148.21.222 on the map!
52.148.21.65	View precise location of 52.148.21.65 on the map!
52.148.21.92	View precise location of 52.148.21.92 on the map!
52.148.21.139	View precise location of 52.148.21.139 on the map!
52.148.21.166	View precise location of 52.148.21.166 on the map!
52.148.21.113	View precise location of 52.148.21.113 on the map!

10 Random IPs

204.57.84.52	Find precise map location of 204.57.84.52
164.111.8.47	Find precise map location of 164.111.8.47
10.198.242.21	Find precise map location of 10.198.242.21
191.4.225.109	Find precise map location of 191.4.225.109
232.141.26.84	Find precise map location of 232.141.26.84
207.33.238.151	Find precise map location of 207.33.238.151
16.244.165.209	Find precise map location of 16.244.165.209
181.134.139.155	Find precise map location of 181.134.139.155
126.40.192.2	Find precise map location of 126.40.192.2
165.216.14.170	Find precise map location of 165.216.14.170
225.188.73.17	Find precise map location of 225.188.73.17

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