Hi;

Todd Snyder tsnyder at rim.com
Thu May 10 12:51:07 UTC 2012


When you do a dig, the TTL is the 2nd column:

;; ANSWER SECTION:
www.google.com.         604800  IN      CNAME   www.l.google.com.
www.l.google.com.       300     IN      A       74.125.225.20
www.l.google.com.       300     IN      A       74.125.225.19
www.l.google.com.       300     IN      A       74.125.225.18
www.l.google.com.       300     IN      A       74.125.225.16
www.l.google.com.       300     IN      A       74.125.225.17


Although, it will provide the TTL of the cached record if the record is cached, so it may not be the original TTL.

If you want to know the TTL, you can query the authoritative nameservers directly for the record:

# get their nameservers
# dig google.com NS

;; ANSWER SECTION:
google.com.             345600  IN      NS      ns4.google.com.
google.com.             345600  IN      NS      ns1.google.com.
google.com.             345600  IN      NS      ns3.google.com.
google.com.             345600  IN      NS      ns2.google.com.

# pick one, and ask for the record you want
# dig @ns4.google.com www.google.com A +norec

;; ANSWER SECTION:
www.google.com.         604800  IN      CNAME   www.l.google.com.
www.l.google.com.       300     IN      A       74.125.225.148
www.l.google.com.       300     IN      A       74.125.225.147
www.l.google.com.       300     IN      A       74.125.225.144
www.l.google.com.       300     IN      A       74.125.225.146
www.l.google.com.       300     IN      A       74.125.225.145

Cheers


From: bind-users-bounces+tsnyder=rim.com at lists.isc.org [mailto:bind-users-bounces+tsnyder=rim.com at lists.isc.org] On Behalf Of William Thierry SAMEN
Sent: Thursday, May 10, 2012 8:03 AM
To: bind-users at lists.isc.org
Subject: Hi;

Hi, Bind'ers,

i'm trying to have a TTL of a zone just by typing a command, but i can't seen which command line i can used to have the solution.

Can someone have an idea? is it possible to found that?

PS: The zone file is not created by me. For example, i made a dig +dnssec www.google.fr<http://www.google.fr> and i want to know what is the TTL of www.google.com<http://www.google.com>
not the period of querry.

Thx

--
Cordialement.
Thierry SAMEN.

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