Re: number of characters in a domain?

[Mark Andrews <marka () isc org>]

The number of wire octets is <= 255.
The number of presentation characters <= 1008 (63*4*3 + 62*4 + 4)

In message <5793C61B.4080107 () dougbarton us>, Doug Barton writes:
> On 07/23/2016 07:07 AM, Matthew Pounsett wrote:
> > On 23 July 2016 at 14:31, Ryan Finnesey <ryan () finnesey com> wrote:
> >
> > > I was hoping someone can help me confirm my research.  I am correct that
> > > domains are now limited to 67 characters in length including the extension?
> >
> > 63 octets per label (the bits between the period separators) , 255 octets
> > per domain name. In ascii octets and characters are interchangeable, but as
> > Stephan noted, it gets slightly more complicated for IDN.
>
> Not really ... the 1035 limits apply to the A-label
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org