[dsc] Smart second-level-domain mapping

Jerry Lundström jerry at dns-oarc.net
Wed Jan 12 09:32:22 UTC 2022

Hi all,

This smarter PSL/TLD mapping feature is now available for testing thanks
to funding from NIC.AT!


If anyone wanna test this then please let me know and I'll send you
instructions how to set it up.


On 10/18/21 11:14 AM, Jerry Lundström wrote:
> Hi Klaus,
> On 10/18/21 10:26 AM, Klaus Darilion wrote:
>> AFAIK the second-level and third-level domain mapping is purely based on the number of dots. Hence, in our statistics, the most attractive second level domain is "co.uk". Would it be possible to implement a "smart" second-level domain mapping which counts example.com and example.co.uk on the same level? For example using the https://publicsuffix.org/list/public_suffix_list.dat list?
> Sure, maybe you could add a lookup table (txt) that make "co.uk" be
> treated like a single label for example.
> But it would have some performance impact since it would need to look
> this up on every packet.
> It would be fairly simple to add a config for that file, read it into a
> hash and add a lookup in dns_message.c/dns_message_QnameToNld() when
> counting dots.
> I'm hoping that you (or anyone else) have time to implement this?
> Because I don't right now.
> Cheers,
> Jerry
> _______________________________________________
> dsc mailing list
> dsc at lists.dns-oarc.net
> https://lists.dns-oarc.net/mailman/listinfo/dsc

More information about the dsc mailing list