Thomas Thanks for the analysis. It's a good data point.
And the Nameserver usage is useful - from a quick view of the graph if one adds Cloudflare + GoDaddy is approx 60% of the nameservers. On Wed, Nov 21, 2018 at 6:59 AM Thomas Peterson <hidinginthe...@gmail.com> wrote: > To hopefully awaken and further inform the discussion around the ANAME and > HTTP draft specifications that have been put forward, I've done some > further analysis across the Alexa top 1 million domains - my initial > findings are available at https://thpts.github.io/a_or_cname/ . > > A brief summary of what I have found across the entire dataset: > > * 51% of www records return an A record > * 47% of www records return a CNAME > * 64% of those point www back to apex (i.e. www.example.com. IN CNAME > example.com.) > * 17 www records are DNAME > > Any feedback, corrections, and suggestions would be greatly appreciated. > > Regards > > On Tue, 6 Nov 2018 at 10:22, Thomas Peterson <hidinginthe...@gmail.com> > wrote: > >> That may be the case from your own (presumably anecdotal) experience, >> however I took the Alexa top 1 million websites and queried for A* and >> CNAME against the www records for the top 10 000 domains. What I found is >> that approximately 44% returned CNAME records, 56% returning A records. >> >> >> >> Code is https://gist.github.com/thpts/eb5cec361867170a0ffd6ede136c6649 >> here if anyone wishes to look. >> >> >> >> Regards >> >> >> >> * I realise that I could have added AAAA. My presumption is that the top >> 10k websites are not v6 only and at least have an A record in place. >> >> >> >> *From: *DNSOP <dnsop-boun...@ietf.org> on behalf of Olli Vanhoja < >> o...@zeit.co> >> *Date: *Tuesday, 6 November 2018 at 08:24 >> *To: *<dnsop@ietf.org> >> *Subject: *Re: [DNSOP] Fundamental ANAME problems >> >> >> >> In fact if you look at the DNS records some big Internet companies >> >> they rarely use CNAMEs for www but instead you'll see an A record, that >> might >> >> be even backed by a proprietary ANAME solution. >> > _______________________________________________ > DNSOP mailing list > DNSOP@ietf.org > https://www.ietf.org/mailman/listinfo/dnsop >
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