setting dns server 2

[root@user sysconfig]# chkconfig named on
[root@user sysconfig]# nano /etc/resolv.conf
[root@user sysconfig]# dig ns1.domain.com

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.4 <<>> ns1.domain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 764
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; QUESTION SECTION:
;ns1.domain.com.           IN      A

;; ANSWER SECTION:
ns1.domain.com.    86400   IN      A       103.31.xxx.126

;; AUTHORITY SECTION:
domain.com.        86400   IN      NS      ns2.domain.com.
domain.com.        86400   IN      NS      ns1.domain.com.

;; ADDITIONAL SECTION:
ns2.domain.com.    86400   IN      A       103.31.xxx.126

;; Query time: 0 msec
;; SERVER: 103.31.xxx.126#53(103.31.xxx.126)
;; WHEN: Sat May  4 11:33:24 2013
;; MSG SIZE  rcvd: 101

[root@user sysconfig]# dig -x 103.31.xxx.126

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.4 <<>> -x 103.31.xxx.126
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2963
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;126.xxx.31.103.in-addr.arpa.   IN      PTR

;; ANSWER SECTION:
126.xxx.31.103.in-addr.arpa. 86400 IN   PTR     www.domain.com.
126.xxx.31.103.in-addr.arpa. 86400 IN   PTR     domain.com.

;; AUTHORITY SECTION:
xxx.31.103.in-addr.arpa. 86400  IN      NS      ns1.domain.com.
xxx.31.103.in-addr.arpa. 86400  IN      NS      ns2.domain.com.

;; ADDITIONAL SECTION:
ns1.domain.com.    86400   IN      A       103.31.xxx.126
ns2.domain.com.    86400   IN      A       103.31.xxx.126

;; Query time: 0 msec
;; SERVER: 103.31.250.126#53(103.31.xxx.126)
;; WHEN: Sat May  4 11:33:57 2013
;; MSG SIZE  rcvd: 160