[190738] in North American Network Operators' Group
Re: number of characters in a domain?
daemon@ATHENA.MIT.EDU (Doug Barton)
Sat Jul 23 15:31:49 2016
X-Original-To: nanog@nanog.org
To: nanog@nanog.org
From: Doug Barton <dougb@dougbarton.us>
Date: Sat, 23 Jul 2016 12:31:39 -0700
In-Reply-To: <CAAiTEH_O6-Qsd5fDzguwuZ6-QGcyXkh=DqDK3kDUHHG3Tp=1qQ@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org
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
