133.21.141 is a class C of IPs

Sample IPs from the class C 133.21.141

133.21.141.151	View precise location of 133.21.141.151 on the map!
133.21.141.60	View precise location of 133.21.141.60 on the map!
133.21.141.34	View precise location of 133.21.141.34 on the map!
133.21.141.36	View precise location of 133.21.141.36 on the map!
133.21.141.2	View precise location of 133.21.141.2 on the map!
133.21.141.81	View precise location of 133.21.141.81 on the map!
133.21.141.252	View precise location of 133.21.141.252 on the map!
133.21.141.84	View precise location of 133.21.141.84 on the map!
133.21.141.125	View precise location of 133.21.141.125 on the map!
133.21.141.168	View precise location of 133.21.141.168 on the map!
133.21.141.102	View precise location of 133.21.141.102 on the map!

10 Random IPs

89.173.149.193	Find precise map location of 89.173.149.193
245.93.228.70	Find precise map location of 245.93.228.70
70.73.82.255	Find precise map location of 70.73.82.255
110.147.173.140	Find precise map location of 110.147.173.140
9.134.72.28	Find precise map location of 9.134.72.28
211.30.45.236	Find precise map location of 211.30.45.236
178.237.244.39	Find precise map location of 178.237.244.39
78.228.241.62	Find precise map location of 78.228.241.62
7.165.229.102	Find precise map location of 7.165.229.102
113.227.147.190	Find precise map location of 113.227.147.190
122.64.71.242	Find precise map location of 122.64.71.242

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