83.30.81 is a class C of IPs

Sample IPs from the class C 83.30.81

83.30.81.251	View precise location of 83.30.81.251 on the map!
83.30.81.68	View precise location of 83.30.81.68 on the map!
83.30.81.174	View precise location of 83.30.81.174 on the map!
83.30.81.197	View precise location of 83.30.81.197 on the map!
83.30.81.44	View precise location of 83.30.81.44 on the map!
83.30.81.217	View precise location of 83.30.81.217 on the map!
83.30.81.113	View precise location of 83.30.81.113 on the map!
83.30.81.245	View precise location of 83.30.81.245 on the map!
83.30.81.246	View precise location of 83.30.81.246 on the map!
83.30.81.3	View precise location of 83.30.81.3 on the map!
83.30.81.124	View precise location of 83.30.81.124 on the map!

10 Random IPs

227.137.237.66	Find precise map location of 227.137.237.66
116.26.31.57	Find precise map location of 116.26.31.57
13.48.52.227	Find precise map location of 13.48.52.227
16.37.186.255	Find precise map location of 16.37.186.255
46.32.36.124	Find precise map location of 46.32.36.124
243.243.220.186	Find precise map location of 243.243.220.186
167.26.12.227	Find precise map location of 167.26.12.227
47.81.24.253	Find precise map location of 47.81.24.253
3.105.251.212	Find precise map location of 3.105.251.212
64.115.219.158	Find precise map location of 64.115.219.158
82.243.200.224	Find precise map location of 82.243.200.224

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