Label compression is pretty common, I think all of the big name server implementations do it by default. Amazon Route 53 definitely does it - I wrote the code!

Label compression is pretty common, I think all of the big name server implementations do it by default. Amazon Route 53 definitely does it - I wrote the code! But my favorite thing about DNS label compression is probably this quote from DJB's code where he implemented it ... https://github.com/abh/djbdns/blob/0715ca5de14ad5eae2c779c536beee2ef56d07a2/dns_packet.c#L2 https://github.com/abh/djbdns/blob/0715ca5de14ad5eae2c779c53...