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Re: Are public DNS a good thing? (was: Re: 1.1.1.1)


From: Paul Ebersman via NANOG <nanog () lists nanog org>
Date: Thu, 17 Jul 2025 10:17:30 -0600

This raises my question: are public DNS like 1.1.1.1 or Google's
8.8.8.8 actually a good thing?

rubensk> According to BCP-140, no, not a good thing.

That BCP is from 2015...

Running a safe and robust recursive service for large numbers of users
or a business is not trivial. The reality is that most SMB don't have
anyone with the expertise to do this well. For those folks, or folks
that don't like/trust their ISP at home, using the quad-X (1.1.1.1,
8.8.8.8, 9.9.9.9) is a much better and safer experience than trying to
run their own.

Yes, there are some performance and privacy tradeoffs. But the folks
running the quad-X are far more likely to be current on DNS trends, not
using 2015 habits in a 2025 world.
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