DNS size
Mark_Andrews at isc.org
Mark_Andrews at isc.org
Tue Sep 21 07:00:17 UTC 1999
> Developers in my area have asked what is the largest size whole domain
> you can have ie, character size.
> xxxxxx.xxxxxxx.xxxxxxxx.xxxxxxx.com.
> I know that a single domain name can be 63 characters but is there a limit
> on the whole or is that based on the operating system.
>
> Thanks
> Dave
The maximium uncompressed wire length is 255 octets.
This give a maximum hostname lenght of 253 characters.
The maximum number of character reqired to store a arbitary
domain name in ascii is just under 1k.
Also what you are calling a "single domain name" is known as
a label.
Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
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