21.18.89 is a class C of IPs

Sample IPs from the class C 21.18.89

21.18.89.252	View precise location of 21.18.89.252 on the map!
21.18.89.92	View precise location of 21.18.89.92 on the map!
21.18.89.45	View precise location of 21.18.89.45 on the map!
21.18.89.149	View precise location of 21.18.89.149 on the map!
21.18.89.21	View precise location of 21.18.89.21 on the map!
21.18.89.175	View precise location of 21.18.89.175 on the map!
21.18.89.209	View precise location of 21.18.89.209 on the map!
21.18.89.33	View precise location of 21.18.89.33 on the map!
21.18.89.33	View precise location of 21.18.89.33 on the map!
21.18.89.46	View precise location of 21.18.89.46 on the map!
21.18.89.184	View precise location of 21.18.89.184 on the map!

10 Random IPs

230.158.214.32	Find precise map location of 230.158.214.32
41.252.248.251	Find precise map location of 41.252.248.251
65.103.185.19	Find precise map location of 65.103.185.19
34.242.95.92	Find precise map location of 34.242.95.92
96.180.33.16	Find precise map location of 96.180.33.16
225.4.110.48	Find precise map location of 225.4.110.48
226.177.81.183	Find precise map location of 226.177.81.183
253.50.210.28	Find precise map location of 253.50.210.28
65.155.222.67	Find precise map location of 65.155.222.67
111.143.4.17	Find precise map location of 111.143.4.17
129.27.119.131	Find precise map location of 129.27.119.131

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