mailing list archives
Re: What do people use public suffix for?
From: Geoffrey Keating <geoffk () geoffk org>
Date: 15 Apr 2013 14:34:16 -0700
"John Levine" <johnl () iecc com> writes:
The public suffix list contains points in the DNS where (roughly
speaking) names below that point are under different management from
each other and from that name. It's here: http://publicsuffix.org/
The idea is that abc.foo.com and xyz.foo.com have the same management,
but abc.co.uk and xyz.co.uk do not.
You don't have to tell me that it's a gross crock, but it seems to
be a useful one. What do people use it for?
CAs use it as part of a procedure to determine whether it's safe to
issue a wildcard domain (as in, if it's on the list, it's not safe). See
<https://www.cabforum.org/Baseline_Requirements_V1_1_3.pdf>, section 11.1.3.
They'd really like to have a process which is less ad-hoc. For
example, it'd be great if these points were annotated in the DNS
itself, perhaps with a record which points to the corresponding
Re: What do people use public suffix for? Geoffrey Keating (Apr 15)
- Re: What do people use public suffix for?, (continued)