Classless InterDomain Routing

Views Updated: Dec 15, 2025

Key Facts

Abbreviation

CIDR

Pronunciation

/ˈklæsləs ˌɪntərˈdɔmaɪn ˈraʊtɪŋ/

Category

Computing

Related Field

Networking

Examples in Context

The new version of RIP is RIP-2. It allows packets to include such information as routing summary, classless interdomain routing, variable length subnet mask and simple authentication.

Other meanings of CIDR

Classless Inter-Domain Routing Computing

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