John, > Hm. So, I'm sure I can figure this out eventually, but does anyone know > the right Net::DNS way to extract the TTL?
I don't think it is possible to obtain the original TTL from DNS responses. The information received in a reply only indicates a remaining time this information has, before it need be refreshed from a source. If responses come from a cache of a local name server, the resulting TTL will get smaller by every call answered from a cache. Try and see! On a first call: $ host -v -t a 2g00d.mobi one gets 1800 seconds: ;; ANSWER SECTION: 2g00d.mobi. 1800 IN A 220.112.46.131 half an hour later only few seconds remain: ;; ANSWER SECTION: 2g00d.mobi. 36 IN A 220.112.46.131 and after expiry, you are up to 1800 s again. Mark
