[dns-operations] RFC2308, negative answer caching, and the largest gTLDs

James Stevens James.Stevens at jrcs.co.uk
Fri Mar 9 13:49:08 UTC 2018

As far as I can see this is the behaviour described in RFC2308/3

"The TTL of this record is set from the minimum of the MINIMUM field of 
the SOA record and the TTL of the SOA itself"

On 08/03/18 22:41, Alexander Dupuy wrote:
> but there may be other name servers with different behavior. In 
> particular I recall that a direct query to some name servers for SOA 
> returns an SOA TTL larger the SOA MIN value, while the SOA TTL in a 
> negative response is clamped to be no larger than the SOA MIN,

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