base domain doesn't respond with an IP

[lbutlr]

On a domain all the subdomain names resolve to IP address (mail, ns1, www, etc etc) but the base domain name does not.

the config files looks like:

$ORIGIN .
$TTL 86400      ; 1 day
covisp.net.             IN SOA  ns1.covisp.net. root.covisp.net. (
                               2016103100 ; serial
                             1H ; refresh
                             15 ; retry
                             1w ; expire
                             600 ; minimum
                               )
                       NS      ns1.covisp.net.
                       NS      ns2.covisp.net.
                       NS      mail.covisp.net.
                       MX      10 mail.covisp.net.
$ORIGIN covisp.net.
mail                    A       65.121.55.42
ns1                     A       65.121.55.43
ns2                     A       65.121.55.44
www                     A       65.121.55.45

dnscheck.pingdom.com shows everything is fine.

<http://dnscheck.pingdom.com/?domain=covisp.net&timestamp=1478077674&view=1 <http://dnscheck.pingdom.com/?domain=covisp.net&timestamp=1478077674&view=1>>

# dig covisp.net @ns2.covisp.net
…

;covisp.net.			IN	A

;; AUTHORITY SECTION:
covisp.net.		600	IN	SOA	ns1.covisp.net. root.covisp.net. 2016103100 3600 15 604800 600

(I have also tried the following, with no change:

$ORIGIN covisp.net.
.        A       65.121.55.42
mail     A       65.121.55.42

I’m sure it’s something stupid….

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