IP address 81.19.159.40
IP address: 81.19.159.40
Address type: IPv4
Hostname or reverse DNS (rDNS): www40sni.world4you.com
Country: 
Austria
81.19.159.40 does NOT belong to a private IP address block.
81.19.159.40 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 81.19.159.40 can be represented.
Dotted decimal: 81.19.159.40
Hexadecimal: 0x51139F28
Dotted hex: 0x51.0x13.0x9F.0x28
Decimal: 1360240424
Octal: 0121.0023.0237.0050
Binary: 01010001.00010011.10011111.00101000