IRR (Internet Routing Registry)
Also known as: internet routing registry, route object
A distributed database of route objects declaring which ASN intends to originate which prefix, used to build routing filters.
The IRR is a set of databases (maintained by RIRs and others) where operators publish route and route6 objects: statements that a given prefix is expected to be originated by a given ASN. Networks generate prefix filters for their peers and customers from this data.
IRR predates RPKI and is less strongly authenticated - anyone can create objects in some registries - but it remains widely used for building AS-path and prefix filters, and complements RPKI's cryptographic origin validation.
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