CIDR-/subnettkalkulator
Bryt ned en vilkårlig IPv4-CIDR-blokk i nettverks- og kringkastingsadresser, brukbart vertsintervall, antall verter og nettmaske. Kjører helt i nettleseren din.
NettverkCIDR-kalkulator
Analyserer en enkelt IPv4-CIDR-blokk: nett, kringkasting, maske og vertsområde.
Kjører lokalt, ingenting sendes til noen server.
What this page needs
This tool computes entirely on your device, so nothing you type is sent anywhere. That local computation needs JavaScript; CSS is used for layout and theming.
This tool is built to also work over an HTTP API. Processing is currently off, so the API is documented but not served; when it is switched on, you will be able to call it without a browser.
All results are computed locally from the address and prefix you enter, using standard IPv4 addressing arithmetic. Nothing is looked up remotely and nothing is sent anywhere.
- RFC 4632 (CIDR)Classless Inter-Domain Routing address aggregation
- RFC 1918Private address ranges
- RFC 791 (IPv4)The Internet Protocol