104.57.13 is a class C of IPs

Sample IPs from the class C 104.57.13

104.57.13.248	View precise location of 104.57.13.248 on the map!
104.57.13.233	View precise location of 104.57.13.233 on the map!
104.57.13.12	View precise location of 104.57.13.12 on the map!
104.57.13.109	View precise location of 104.57.13.109 on the map!
104.57.13.146	View precise location of 104.57.13.146 on the map!
104.57.13.88	View precise location of 104.57.13.88 on the map!
104.57.13.16	View precise location of 104.57.13.16 on the map!
104.57.13.160	View precise location of 104.57.13.160 on the map!
104.57.13.101	View precise location of 104.57.13.101 on the map!
104.57.13.41	View precise location of 104.57.13.41 on the map!
104.57.13.133	View precise location of 104.57.13.133 on the map!

10 Random IPs

94.113.254.113	Find precise map location of 94.113.254.113
110.17.195.10	Find precise map location of 110.17.195.10
142.188.129.34	Find precise map location of 142.188.129.34
59.132.12.224	Find precise map location of 59.132.12.224
33.118.206.161	Find precise map location of 33.118.206.161
232.48.23.131	Find precise map location of 232.48.23.131
149.65.57.89	Find precise map location of 149.65.57.89
75.78.163.52	Find precise map location of 75.78.163.52
22.126.150.174	Find precise map location of 22.126.150.174
105.199.208.217	Find precise map location of 105.199.208.217
39.44.86.163	Find precise map location of 39.44.86.163

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