Tue 19 Jul 2022

DNS Response Size

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.

Source: DNS Response Size, an article by Jan Schaumann.