81.66.49 is a class C of IPs

Sample IPs from the class C 81.66.49

81.66.49.55	View precise location of 81.66.49.55 on the map!
81.66.49.118	View precise location of 81.66.49.118 on the map!
81.66.49.194	View precise location of 81.66.49.194 on the map!
81.66.49.154	View precise location of 81.66.49.154 on the map!
81.66.49.9	View precise location of 81.66.49.9 on the map!
81.66.49.3	View precise location of 81.66.49.3 on the map!
81.66.49.151	View precise location of 81.66.49.151 on the map!
81.66.49.1	View precise location of 81.66.49.1 on the map!
81.66.49.2	View precise location of 81.66.49.2 on the map!
81.66.49.186	View precise location of 81.66.49.186 on the map!
81.66.49.245	View precise location of 81.66.49.245 on the map!

10 Random IPs

175.203.197.84	Find precise map location of 175.203.197.84
98.240.121.66	Find precise map location of 98.240.121.66
68.110.1.19	Find precise map location of 68.110.1.19
111.197.17.174	Find precise map location of 111.197.17.174
90.67.208.68	Find precise map location of 90.67.208.68
62.221.155.142	Find precise map location of 62.221.155.142
37.232.253.246	Find precise map location of 37.232.253.246
192.187.221.172	Find precise map location of 192.187.221.172
162.71.85.91	Find precise map location of 162.71.85.91
113.112.189.123	Find precise map location of 113.112.189.123
106.149.228.73	Find precise map location of 106.149.228.73

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