nanog mailing list archives

Re: number of characters in a domain?


From: Doug Barton <dougb () dougbarton us>
Date: Sat, 23 Jul 2016 12:31:39 -0700

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


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