Lookup of 1.2.3.4
IP address: 1.2.3.4
Address type: IPv4
Hostname or reverse DNS (rDNS): (host name is not defined)
Country: 
Australia
1.2.3.4 does NOT belong to a private IP address block.
1.2.3.4 does NOT belong to a reserved IP address block.
IP address 1.2.3.4
IP address: 1.2.3.4
Address type: IPv4
Hostname or reverse DNS (rDNS): (host name is not defined)
Country: Australia
1.2.3.4 does NOT belong to a private IP address block.
1.2.3.4 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 1.2.3.4 can be represented.
Dotted decimal: 1.2.3.4
Hexadecimal: 0x01020304
Dotted hex: 0x01.0x02.0x03.0x04
Decimal: 16909060
Octal: 0001.0002.0003.0004
Binary: 00000001.00000010.00000011.00000100