IP address 129.217.205.12
IP address: 129.217.205.12
Address type: IPv4
Host or reverse DNS (rDNS): dc2.tu-dortmund.de
Country: 
Germany
129.217.205.12 does NOT belong to a private IP address block.
129.217.205.12 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 129.217.205.12 can be represented.
Dotted decimal: 129.217.205.12
Hexadecimal: 0x81D9CD0C
Dotted hex: 0x81.0xD9.0xCD.0x0C
Decimal: 2178534668
Octal: 0201.0331.0315.0014
Binary: 10000001.11011001.11001101.00001100