Guess the maximum DNS Response Size… (by Jan Schaumann)
Posted by jpluimers on 2023/12/26
Every once in a while Jan Schaumann writes a long Twitter thread and saves it in a blog post. Always good ways to learn. This time it was no different: [Wayback/Archive] DNS Response Size started with
Pop quiz: What is the maximum number of A records in a DNS round robin? Or the largest number of bytes in a TXT record? Maybe it’s all the same, and we should ask what is the maximum size of a DNS response? Is it…
- 512 bytes
- 1232 bytes
- 65536 bytes
- “It depends.”
Let’s find out. The answer is, as all things involving the DNS, entertaining.
Recommended reading!
Via [Wayback/Archive] Jan Schaumann on Twitter: “Pop quiz: what is the maximum size of a DNS response?”
Threaded at [Wayback/Archive] Thread by @jschauma on Thread Reader App – Thread Reader App
–jeroen
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