21.60.51 is a class C of IPs

Sample IPs from the class C 21.60.51

21.60.51.160	View precise location of 21.60.51.160 on the map!
21.60.51.238	View precise location of 21.60.51.238 on the map!
21.60.51.109	View precise location of 21.60.51.109 on the map!
21.60.51.187	View precise location of 21.60.51.187 on the map!
21.60.51.253	View precise location of 21.60.51.253 on the map!
21.60.51.75	View precise location of 21.60.51.75 on the map!
21.60.51.201	View precise location of 21.60.51.201 on the map!
21.60.51.83	View precise location of 21.60.51.83 on the map!
21.60.51.232	View precise location of 21.60.51.232 on the map!
21.60.51.112	View precise location of 21.60.51.112 on the map!
21.60.51.78	View precise location of 21.60.51.78 on the map!

10 Random IPs

34.206.91.182	Find precise map location of 34.206.91.182
96.138.55.168	Find precise map location of 96.138.55.168
167.207.46.87	Find precise map location of 167.207.46.87
75.209.122.106	Find precise map location of 75.209.122.106
210.60.99.201	Find precise map location of 210.60.99.201
186.116.15.199	Find precise map location of 186.116.15.199
51.19.206.146	Find precise map location of 51.19.206.146
51.90.61.229	Find precise map location of 51.90.61.229
135.31.1.96	Find precise map location of 135.31.1.96
145.223.237.46	Find precise map location of 145.223.237.46
89.241.230.92	Find precise map location of 89.241.230.92

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