Hi Malcolmlewis,

Thanks for your response.
Below is current status. Still i am unable to resolve DNS by giving this way: nslookup sapecc
Something I am missing which i am unable to trace it out.
Seeking more help on this.

apecc:/etc # dig sapecc.chandra.com


; <<>> DiG 9.9.6-P1 <<>> sapecc.chandra.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25110

;; flags: qr rd ra
; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:
; udp: 4096

;; QUESTION SECTION:

;sapecc.chandra.com. IN A


;; ANSWER SECTION:
sapecc.chandra.com. 300 IN A 64.99.80.121


;; Query time: 272 msec

;; SERVER: 62.241.198.246#53(62.241.198.246)

;; WHEN: Sat Oct 19 10:14:24 EDT 2019

;; MSG SIZE rcvd: 63

==========================

sapecc:/etc # nslookup sapecc.chandra.com

Server: 62.241.198.246

Address: 62.241.198.246
#53

Non-authoritative answer:

Name: sapecc.chandra.com

Address: 64.99.80.121



============================

Host file:


# IP-Address Full-Qualified-Hostname Short-Hostname

#


127.0.0.1 sapecc.chandra.com sapecc
#127.0.0.1 localhost



# special IPv6 addresses

::1 localhost ipv6-localhost ipv6-loopback


fe00::0 ipv6-localnet


ff00::0 ipv6-mcastprefix

ff02::1 ipv6-allnodes

ff02::2 ipv6-allrouters

ff02::3 ipv6-allhosts