CIDR-/subnetberegner
Opdel en vilkårlig IPv4-CIDR-blok i netværks- og broadcastadresser, brugbart værtsinterval, antal værter og netmaske. Kører helt i din browser.
NetværkCIDR-beregner
Analyserer en enkelt IPv4-CIDR-blok: net, broadcast, maske og værtsinterval.
Kører lokalt, intet sendes til nogen 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