The number of wire octets is <= 255. The number of presentation characters <= 1008 (63*4*3 + 62*4 + 4)
In message <5793c61b.4080...@dougbarton.us>, Doug Barton writes: > On 07/23/2016 07:07 AM, Matthew Pounsett wrote: > > On 23 July 2016 at 14:31, Ryan Finnesey <r...@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: ma...@isc.org
