Lookup of 158.42.4.23
IP address: 158.42.4.23
Address type: IPv4
Host or reverse DNS (rDNS): ias.cc.upv.es
Country: 
Spain
158.42.4.23 does NOT belong to a private IP address block.
158.42.4.23 does NOT belong to a reserved IP address block.
IP address 158.42.4.23
IP address: 158.42.4.23
Address type: IPv4
Host or reverse DNS (rDNS): ias.cc.upv.es
Country: Spain
158.42.4.23 does NOT belong to a private IP address block.
158.42.4.23 does NOT belong to a reserved IP address block.
There are different formats or notations how the IP address 158.42.4.23 can be represented.
Dotted decimal: 158.42.4.23
Hexadecimal: 0x9E2A0417
Dotted hex: 0x9E.0x2A.0x04.0x17
Decimal: 2653553687
Octal: 0236.0052.0004.0027
Binary: 10011110.00101010.00000100.00010111