252.144.221 is a class C of IPs

Sample IPs from the class C 252.144.221

252.144.221.16	View precise location of 252.144.221.16 on the map!
252.144.221.52	View precise location of 252.144.221.52 on the map!
252.144.221.112	View precise location of 252.144.221.112 on the map!
252.144.221.39	View precise location of 252.144.221.39 on the map!
252.144.221.84	View precise location of 252.144.221.84 on the map!
252.144.221.234	View precise location of 252.144.221.234 on the map!
252.144.221.249	View precise location of 252.144.221.249 on the map!
252.144.221.195	View precise location of 252.144.221.195 on the map!
252.144.221.172	View precise location of 252.144.221.172 on the map!
252.144.221.135	View precise location of 252.144.221.135 on the map!
252.144.221.57	View precise location of 252.144.221.57 on the map!

10 Random IPs

206.213.240.158	Find precise map location of 206.213.240.158
95.7.219.168	Find precise map location of 95.7.219.168
39.120.83.58	Find precise map location of 39.120.83.58
23.194.52.17	Find precise map location of 23.194.52.17
241.67.101.61	Find precise map location of 241.67.101.61
221.245.60.174	Find precise map location of 221.245.60.174
12.65.35.89	Find precise map location of 12.65.35.89
155.32.94.151	Find precise map location of 155.32.94.151
90.71.63.131	Find precise map location of 90.71.63.131
102.89.98.189	Find precise map location of 102.89.98.189
37.118.138.27	Find precise map location of 37.118.138.27

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