Shortest URLs on the Internet

Re:Shortest URLs on the Internet by matttpt on Sunday September 11, 2022 @04:05PM (#32802795)

> Some have A records pointing to the root servers. I’m not sure why this is - I think it might be because no DNS has been configured in the TLD zone for these TLDs.

I was also curious about this. It turns out that it's because dig interprets some TLDs as DNS record types (MD, MG, MR, MX) or DNS classes (IN and CH) of the same name! Not sure why, but when given only a type or class (without a domain name), dig actually queries for a list of the root servers, which explains the strange results. Looks like using the -q option to specify the domain name works around this.

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Re:Shortest URLs on the Internet by jamespwilliams on Sunday September 11, 2022 @04:46PM (#32803116)

Oh interesting, thanks! I fixed the script and ran the TLD list through again, in case this meant I missed some, but none of the affected TLDs have A records. I'll update my post to mention your comment.

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Re:Shortest URLs on the Internet by chedabob on Monday September 12, 2022 @05:39AM (#32807811)

There was a post recently about some of these TLDs: https://news.ycombinator.com/item?id=32094645

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Re:Shortest URLs on the Internet by N6VjeuHbGSwMN9e on Sunday September 11, 2022 @05:18PM (#32803359)

Or you could just make it a FQDN: `dig @8.8.8.8 MX.`

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