Network Utilities

IP Lookup, CIDR Calculator, MAC Address Lookup, and Port Number Lookup

Subnet Calculator

Here's the subnet information about the given CIDR.
Subnet Range through
Subnet Size 256 IPs
Bitmask 24
API Call

Get JSON results via command line with either curl or wget.

Try it:
curl ""

    "start": "",
    "end": "",
    "bits": 24,
    "netmask": "",
    "size": 256