15.18.77 is a class C of IPs

Sample IPs from the class C 15.18.77

15.18.77.155	View precise location of 15.18.77.155 on the map!
15.18.77.47	View precise location of 15.18.77.47 on the map!
15.18.77.228	View precise location of 15.18.77.228 on the map!
15.18.77.220	View precise location of 15.18.77.220 on the map!
15.18.77.192	View precise location of 15.18.77.192 on the map!
15.18.77.237	View precise location of 15.18.77.237 on the map!
15.18.77.160	View precise location of 15.18.77.160 on the map!
15.18.77.30	View precise location of 15.18.77.30 on the map!
15.18.77.15	View precise location of 15.18.77.15 on the map!
15.18.77.60	View precise location of 15.18.77.60 on the map!
15.18.77.221	View precise location of 15.18.77.221 on the map!

10 Random IPs

193.235.180.96	Find precise map location of 193.235.180.96
162.253.166.84	Find precise map location of 162.253.166.84
253.227.101.75	Find precise map location of 253.227.101.75
215.14.163.52	Find precise map location of 215.14.163.52
113.159.44.154	Find precise map location of 113.159.44.154
26.100.109.253	Find precise map location of 26.100.109.253
201.20.223.139	Find precise map location of 201.20.223.139
24.108.102.156	Find precise map location of 24.108.102.156
92.33.234.80	Find precise map location of 92.33.234.80
93.18.250.77	Find precise map location of 93.18.250.77
153.249.66.120	Find precise map location of 153.249.66.120

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