Solving Bind DNS un-resolved when nslookup domain without WWW

Solving Bind DNS un-resolved when nslookup domain without WWW

This is common mistake when we try to nslookup our domain that working with “WWW” but not without “WWW”. This is some bind9 configuration :

;
; BIND data file for local loopback interface
;
$TTL 3600
@ IN SOA obroll.com. admin.obroll.com. (
30 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns1.obroll.com.
ns1 IN A 15.185.178.20
ns2 IN A 15.185.178.20
www IN A 15.185.178.20

You will see there nothing wrong here until you realize you missing something.
Yes, I’m missing “@ IN “. Then, it should be :

;
; BIND data file for local loopback interface
;
$TTL 3600
@ IN SOA obroll.com. admin.obroll.com. (
30 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns1.obroll.com.
@ IN A 15.185.178.20
ns1 IN A 15.185.178.20
ns2 IN A 15.185.178.20
www IN A 15.185.178.20

credit : http://obroll.com/solving-bind-dns-un-resolved-when-nslookup-domain-without-www/