IP address 128.100.5.23
IP address: 128.100.5.23
Address type: IPv4
Host or reverse DNS (rDNS): vhost-toronto.cs.toronto.edu
Country: 
Canada
128.100.5.23 does NOT belong to a private IP address block.
128.100.5.23 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 128.100.5.23 can be represented.
Dotted decimal: 128.100.5.23
Hexadecimal: 0x80640517
Dotted hex: 0x80.0x64.0x05.0x17
Decimal: 2154038551
Octal: 0200.0144.0005.0027
Binary: 10000000.01100100.00000101.00010111