mailing list archives
Re: Dear RIPE: Please don't encourage phishing
From: Jimmy Hess <mysidia () gmail com>
Date: Sun, 12 Feb 2012 23:47:11 -0600
On Sun, Feb 12, 2012 at 11:36 PM, Randy Bush <randy () psg com> wrote:
DNS is case-insensitive when you are talking about 7-bit ASCII
< pedantry >
dns itself is purely eight bit transparent. one can even have a dot as
a non-separator. p.r.c could be a tld. it's strictly length/value.
That's true, but there is no standard character representation for
octet values 128 - 255.
If you use them in a DNS record, they are just binary values that
don't refer to a specific printable symbol.
Only octets in the range from 65 to 90 (uppercase) and 977 to 122
have a case equivalent for DNS resolution.
And IDN uses 7-bit ASCII DNS records.