Dear RIPE: Please don't encourage phishing

Jimmy Hess mysidia at gmail.com
Sun Feb 12 23:47:11 CST 2012


On Sun, Feb 12, 2012 at 11:36 PM, Randy Bush <randy at 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
(lowercase)
have a case equivalent for DNS resolution.

And IDN  uses 7-bit ASCII  DNS records.

--
-JH



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