Everyday tools.
Clear answers.
Inspect a URL, work out an IPv4 subnet, or look up a web concept. No account, installation or upload.
Calculations stay in your browser
The workbench
Two focused tools01 / NETWORKS
192.168.1.80/24
IPv4 subnet calculator
Network, mask, address range and usable hosts. Includes point-to-point and single-address networks.
Calculate a subnet →02 / WEB ADDRESSEShttps://example.org
URL inspector
Separate a web address into its host, path, query parameters and fragment. Nothing is fetched.
Inspect a URL →