121.37.55 is a class C of IPs

Sample IPs from the class C 121.37.55

121.37.55.53	View precise location of 121.37.55.53 on the map!
121.37.55.99	View precise location of 121.37.55.99 on the map!
121.37.55.35	View precise location of 121.37.55.35 on the map!
121.37.55.214	View precise location of 121.37.55.214 on the map!
121.37.55.201	View precise location of 121.37.55.201 on the map!
121.37.55.124	View precise location of 121.37.55.124 on the map!
121.37.55.221	View precise location of 121.37.55.221 on the map!
121.37.55.63	View precise location of 121.37.55.63 on the map!
121.37.55.231	View precise location of 121.37.55.231 on the map!
121.37.55.222	View precise location of 121.37.55.222 on the map!
121.37.55.197	View precise location of 121.37.55.197 on the map!

10 Random IPs

143.225.222.145	Find precise map location of 143.225.222.145
168.75.50.160	Find precise map location of 168.75.50.160
113.35.108.48	Find precise map location of 113.35.108.48
9.63.8.113	Find precise map location of 9.63.8.113
47.157.68.167	Find precise map location of 47.157.68.167
5.96.166.204	Find precise map location of 5.96.166.204
206.112.67.105	Find precise map location of 206.112.67.105
55.73.114.110	Find precise map location of 55.73.114.110
238.149.23.19	Find precise map location of 238.149.23.19
251.76.18.176	Find precise map location of 251.76.18.176
188.61.29.213	Find precise map location of 188.61.29.213

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