> -----Ursprüngliche Nachricht----- > Von: bind-users <bind-users-boun...@lists.isc.org> Im Auftrag von Jan > Schaumann via bind-users > Gesendet: Dienstag, 26. März 2024 14:44 > An: bind-users@lists.isc.org > Betreff: Re: [OFF-TOPIC] Question about ClouDNS (and others') ALIAS records > > Karl Auer <ka...@biplane.com.au> wrote: > > I'm puzzled by the ClouDNS "ALIAS" record. I was wondering if anyone > > knows how it is handled "under the hood"? > > Many DNS service providers have some sort of variation > of this, since "aliases at the apex" is a feature many > customers need: > > Akamai uses "Zone apex mapping": > https://techdocs.akamai.com/edge-dns/docs/features#zone-apex-mapping > > Cloudflare uses "CNAME flattening": > https://blog.cloudflare.com/introducing-cname-flattening-rfc-compliant-cnames- > at-a-domains-root/ > > AWS uses "alias records": > https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record- > sets-choosing-alias-non-alias.html > ...
Some more info can be found in the deprecated draft: https://datatracker.ietf.org/doc/draft-ietf-dnsop-aname/ This is for example very similar how ALIAS is implemented in PowerDNS Auth. But as there is no standard for the "CNAME-like at apex" there is no definition on how TTLs .... should be implemented. Regards Klaus -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
