221.73.138 is a class C of IPs

Sample IPs from the class C 221.73.138

221.73.138.100	View precise location of 221.73.138.100 on the map!
221.73.138.187	View precise location of 221.73.138.187 on the map!
221.73.138.153	View precise location of 221.73.138.153 on the map!
221.73.138.129	View precise location of 221.73.138.129 on the map!
221.73.138.6	View precise location of 221.73.138.6 on the map!
221.73.138.169	View precise location of 221.73.138.169 on the map!
221.73.138.25	View precise location of 221.73.138.25 on the map!
221.73.138.176	View precise location of 221.73.138.176 on the map!
221.73.138.163	View precise location of 221.73.138.163 on the map!
221.73.138.252	View precise location of 221.73.138.252 on the map!
221.73.138.140	View precise location of 221.73.138.140 on the map!

10 Random IPs

76.145.200.200	Find precise map location of 76.145.200.200
67.60.35.2	Find precise map location of 67.60.35.2
125.248.211.46	Find precise map location of 125.248.211.46
221.97.6.128	Find precise map location of 221.97.6.128
48.222.220.78	Find precise map location of 48.222.220.78
192.166.47.88	Find precise map location of 192.166.47.88
156.129.197.213	Find precise map location of 156.129.197.213
61.179.210.18	Find precise map location of 61.179.210.18
126.190.131.251	Find precise map location of 126.190.131.251
93.176.172.14	Find precise map location of 93.176.172.14
2.199.7.248	Find precise map location of 2.199.7.248

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