IP address 81.161.163.154
IP address: 81.161.163.154
Address type: IPv4
Host or reverse DNS (rDNS): ip61.frb82.cust.comxnet.dk
Country: 
Denmark
81.161.163.154 does NOT belong to a private IP address block.
81.161.163.154 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 81.161.163.154 can be represented.
Dotted decimal: 81.161.163.154
Hexadecimal: 0x51A1A39A
Dotted hex: 0x51.0xA1.0xA3.0x9A
Decimal: 1369547674
Octal: 0121.0241.0243.0232
Binary: 01010001.10100001.10100011.10011010