121.33.87 is a class C of IPs

Sample IPs from the class C 121.33.87

121.33.87.157	View precise location of 121.33.87.157 on the map!
121.33.87.201	View precise location of 121.33.87.201 on the map!
121.33.87.177	View precise location of 121.33.87.177 on the map!
121.33.87.93	View precise location of 121.33.87.93 on the map!
121.33.87.247	View precise location of 121.33.87.247 on the map!
121.33.87.123	View precise location of 121.33.87.123 on the map!
121.33.87.220	View precise location of 121.33.87.220 on the map!
121.33.87.32	View precise location of 121.33.87.32 on the map!
121.33.87.29	View precise location of 121.33.87.29 on the map!
121.33.87.235	View precise location of 121.33.87.235 on the map!
121.33.87.154	View precise location of 121.33.87.154 on the map!

10 Random IPs

55.82.155.205	Find precise map location of 55.82.155.205
94.43.194.58	Find precise map location of 94.43.194.58
194.164.187.255	Find precise map location of 194.164.187.255
103.67.109.26	Find precise map location of 103.67.109.26
13.15.189.254	Find precise map location of 13.15.189.254
114.22.222.118	Find precise map location of 114.22.222.118
7.21.253.31	Find precise map location of 7.21.253.31
250.194.60.24	Find precise map location of 250.194.60.24
57.54.125.195	Find precise map location of 57.54.125.195
179.18.192.252	Find precise map location of 179.18.192.252
25.106.128.45	Find precise map location of 25.106.128.45

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