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 <[email protected]> on behalf of Olli Vanhoja <[email protected]> Date: Tuesday, 6 November 2018 at 08:24 To: <[email protected]> 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.
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