144.235.21 is a class C of IPs

Sample IPs from the class C 144.235.21

144.235.21.121	View precise location of 144.235.21.121 on the map!
144.235.21.140	View precise location of 144.235.21.140 on the map!
144.235.21.229	View precise location of 144.235.21.229 on the map!
144.235.21.58	View precise location of 144.235.21.58 on the map!
144.235.21.104	View precise location of 144.235.21.104 on the map!
144.235.21.108	View precise location of 144.235.21.108 on the map!
144.235.21.159	View precise location of 144.235.21.159 on the map!
144.235.21.70	View precise location of 144.235.21.70 on the map!
144.235.21.72	View precise location of 144.235.21.72 on the map!
144.235.21.172	View precise location of 144.235.21.172 on the map!
144.235.21.232	View precise location of 144.235.21.232 on the map!

10 Random IPs

159.201.64.13	Find precise map location of 159.201.64.13
165.47.208.95	Find precise map location of 165.47.208.95
116.76.177.39	Find precise map location of 116.76.177.39
132.150.87.179	Find precise map location of 132.150.87.179
249.157.127.214	Find precise map location of 249.157.127.214
9.89.35.193	Find precise map location of 9.89.35.193
84.172.142.117	Find precise map location of 84.172.142.117
228.230.243.17	Find precise map location of 228.230.243.17
144.29.44.181	Find precise map location of 144.29.44.181
208.177.184.70	Find precise map location of 208.177.184.70
100.121.15.214	Find precise map location of 100.121.15.214

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