Notes from the plumbing
Domains, DNS, and the systems underneath them.
Nobody agrees when your domain expires
Four sources answer the same question about a domain, and they routinely disagree. Which one wins is not a technical decision — it is a choice about how you would rather be wrong.
Domains without the dashboard
A command line for name.com: it registers domains, manages DNS, prints JSON the moment you pipe it, and asks before it spends your money.
The set that forgets what it holds
A Bloom filter can tell you with certainty what it has never seen. Everything else it says is a guess. An interactive explainer with live hashes.