221.72.147 is a class C of IPs

Sample IPs from the class C 221.72.147

221.72.147.224	View precise location of 221.72.147.224 on the map!
221.72.147.150	View precise location of 221.72.147.150 on the map!
221.72.147.31	View precise location of 221.72.147.31 on the map!
221.72.147.225	View precise location of 221.72.147.225 on the map!
221.72.147.240	View precise location of 221.72.147.240 on the map!
221.72.147.150	View precise location of 221.72.147.150 on the map!
221.72.147.19	View precise location of 221.72.147.19 on the map!
221.72.147.79	View precise location of 221.72.147.79 on the map!
221.72.147.239	View precise location of 221.72.147.239 on the map!
221.72.147.208	View precise location of 221.72.147.208 on the map!
221.72.147.101	View precise location of 221.72.147.101 on the map!

10 Random IPs

27.71.124.131	Find precise map location of 27.71.124.131
100.114.154.242	Find precise map location of 100.114.154.242
215.61.39.101	Find precise map location of 215.61.39.101
249.57.89.162	Find precise map location of 249.57.89.162
99.185.150.42	Find precise map location of 99.185.150.42
5.152.8.107	Find precise map location of 5.152.8.107
186.72.230.158	Find precise map location of 186.72.230.158
167.103.169.198	Find precise map location of 167.103.169.198
176.42.81.152	Find precise map location of 176.42.81.152
20.81.10.67	Find precise map location of 20.81.10.67
146.109.90.67	Find precise map location of 146.109.90.67

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