121.152.181 is a class C of IPs

Sample IPs from the class C 121.152.181

121.152.181.174	View precise location of 121.152.181.174 on the map!
121.152.181.126	View precise location of 121.152.181.126 on the map!
121.152.181.84	View precise location of 121.152.181.84 on the map!
121.152.181.93	View precise location of 121.152.181.93 on the map!
121.152.181.175	View precise location of 121.152.181.175 on the map!
121.152.181.204	View precise location of 121.152.181.204 on the map!
121.152.181.155	View precise location of 121.152.181.155 on the map!
121.152.181.242	View precise location of 121.152.181.242 on the map!
121.152.181.243	View precise location of 121.152.181.243 on the map!
121.152.181.215	View precise location of 121.152.181.215 on the map!
121.152.181.24	View precise location of 121.152.181.24 on the map!

10 Random IPs

158.204.188.196	Find precise map location of 158.204.188.196
120.245.233.57	Find precise map location of 120.245.233.57
185.154.225.109	Find precise map location of 185.154.225.109
230.5.141.252	Find precise map location of 230.5.141.252
222.180.191.145	Find precise map location of 222.180.191.145
21.240.179.95	Find precise map location of 21.240.179.95
161.146.107.165	Find precise map location of 161.146.107.165
126.177.189.209	Find precise map location of 126.177.189.209
16.174.208.108	Find precise map location of 16.174.208.108
253.123.73.238	Find precise map location of 253.123.73.238
140.230.111.31	Find precise map location of 140.230.111.31

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