148.21.40 is a class C of IPs

Sample IPs from the class C 148.21.40

148.21.40.97	View precise location of 148.21.40.97 on the map!
148.21.40.10	View precise location of 148.21.40.10 on the map!
148.21.40.33	View precise location of 148.21.40.33 on the map!
148.21.40.83	View precise location of 148.21.40.83 on the map!
148.21.40.53	View precise location of 148.21.40.53 on the map!
148.21.40.60	View precise location of 148.21.40.60 on the map!
148.21.40.173	View precise location of 148.21.40.173 on the map!
148.21.40.137	View precise location of 148.21.40.137 on the map!
148.21.40.199	View precise location of 148.21.40.199 on the map!
148.21.40.159	View precise location of 148.21.40.159 on the map!
148.21.40.46	View precise location of 148.21.40.46 on the map!

10 Random IPs

59.46.139.4	Find precise map location of 59.46.139.4
120.240.70.198	Find precise map location of 120.240.70.198
214.194.233.63	Find precise map location of 214.194.233.63
217.115.240.95	Find precise map location of 217.115.240.95
80.179.186.30	Find precise map location of 80.179.186.30
158.120.5.23	Find precise map location of 158.120.5.23
86.169.176.191	Find precise map location of 86.169.176.191
141.176.74.56	Find precise map location of 141.176.74.56
6.178.126.251	Find precise map location of 6.178.126.251
20.240.45.229	Find precise map location of 20.240.45.229
119.156.245.188	Find precise map location of 119.156.245.188

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