1 Jul
2017
1 Jul
'17
11:37 a.m.
Le 01/07/2017 à 11:00, Pete Biggs a écrit :
That is controlled by the TTL (time to live) entry. A DNS server must refresh it's cache within the TTL for the entry. Using the '-a' option to host will give you more information:
So I would have to use the -a option with the old DNS server, to know their TTL. I'm also wondering if some DNS server don't override the TTL and keep the information longer. I remember such a case where the DNS server of the french provider Orange kept a stale DNS information forever.