192.21.213 is a class C of IPs

Sample IPs from the class C 192.21.213

192.21.213.152	View precise location of 192.21.213.152 on the map!
192.21.213.96	View precise location of 192.21.213.96 on the map!
192.21.213.215	View precise location of 192.21.213.215 on the map!
192.21.213.210	View precise location of 192.21.213.210 on the map!
192.21.213.91	View precise location of 192.21.213.91 on the map!
192.21.213.9	View precise location of 192.21.213.9 on the map!
192.21.213.199	View precise location of 192.21.213.199 on the map!
192.21.213.178	View precise location of 192.21.213.178 on the map!
192.21.213.228	View precise location of 192.21.213.228 on the map!
192.21.213.199	View precise location of 192.21.213.199 on the map!
192.21.213.199	View precise location of 192.21.213.199 on the map!

10 Random IPs

247.153.44.254	Find precise map location of 247.153.44.254
104.117.213.68	Find precise map location of 104.117.213.68
193.77.100.63	Find precise map location of 193.77.100.63
91.66.100.46	Find precise map location of 91.66.100.46
14.80.228.39	Find precise map location of 14.80.228.39
30.28.95.148	Find precise map location of 30.28.95.148
19.35.147.182	Find precise map location of 19.35.147.182
44.233.225.46	Find precise map location of 44.233.225.46
105.247.58.174	Find precise map location of 105.247.58.174
86.101.103.75	Find precise map location of 86.101.103.75
246.186.17.220	Find precise map location of 246.186.17.220

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