181.83.4 is a class C of IPs

Sample IPs from the class C 181.83.4

181.83.4.150	View precise location of 181.83.4.150 on the map!
181.83.4.216	View precise location of 181.83.4.216 on the map!
181.83.4.54	View precise location of 181.83.4.54 on the map!
181.83.4.144	View precise location of 181.83.4.144 on the map!
181.83.4.237	View precise location of 181.83.4.237 on the map!
181.83.4.119	View precise location of 181.83.4.119 on the map!
181.83.4.246	View precise location of 181.83.4.246 on the map!
181.83.4.38	View precise location of 181.83.4.38 on the map!
181.83.4.253	View precise location of 181.83.4.253 on the map!
181.83.4.186	View precise location of 181.83.4.186 on the map!
181.83.4.46	View precise location of 181.83.4.46 on the map!

10 Random IPs

72.217.47.47	Find precise map location of 72.217.47.47
38.233.100.21	Find precise map location of 38.233.100.21
160.97.147.61	Find precise map location of 160.97.147.61
56.196.102.95	Find precise map location of 56.196.102.95
115.115.234.44	Find precise map location of 115.115.234.44
125.158.31.46	Find precise map location of 125.158.31.46
60.82.15.133	Find precise map location of 60.82.15.133
106.204.217.244	Find precise map location of 106.204.217.244
71.176.123.68	Find precise map location of 71.176.123.68
75.99.37.53	Find precise map location of 75.99.37.53
144.121.177.235	Find precise map location of 144.121.177.235

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