IP address 66.218.87.12
IP address: 66.218.87.12
Address type: IPv4
Host or reverse DNS (rDNS): unknown.yahoo.com
Country: 
United States
66.218.87.12 does NOT belong to a private IP address block.
66.218.87.12 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 66.218.87.12 can be represented.
Dotted decimal: 66.218.87.12
Hexadecimal: 0x42DA570C
Dotted hex: 0x42.0xDA.0x57.0x0C
Decimal: 1121605388
Octal: 0102.0332.0127.0014
Binary: 01000010.11011010.01010111.00001100