number of characters in a domain?

[matt at conundrum.com (Matthew Pounsett)]

On 23 July 2016 at 14:31, Ryan Finnesey <ryan at 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.