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A question about DNS zone files syntax (not sure if it's correct term here).

For my dedicated server I have the following zone file right now:

$TTL 86400
@   IN SOA ns1.first-ns.de. postmaster.robot.first-ns.de. (
    2013111400   ; serial
    14400        ; refresh
    1800         ; retry
    604800       ; expire
    86400 )      ; minimum

@                        IN NS      ns1.first-ns.de.
@                        IN NS      robotns2.second-ns.de.
@                        IN NS      robotns3.second-ns.com.

@                        IN A
localhost                IN A
www                      IN A
@                        IN MX 100  afarber.de.

And I wonder if the 2 lines (which use the same IP-address on the right side) could be written in a shorter form?

@                        IN A
www                      IN A
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1 Answer 1

Not exactly shorter but you can change the 'www' record to a CNAME over an A record. If you set it to a CNAME of your base domain, you will only have to update the primary A record for both to be changed.

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Thanks. Do you mean www CNAME afarber.de.? –  Alexander Farber Nov 15 '13 at 11:59
I'm not actually sure, as I haven't used bind before. Just copy the rest of the syntax, which looks like it would be 'www IN CNAME afarber.de.' –  Peter Nov 15 '13 at 12:03
Peter is right. It is common to use www IN CNAME @ in Bind. Just copy paste that as a replacement to 'www IN A' –  Daniel t. Nov 15 '13 at 21:14

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