shell:$ nslookup -timeout=2 -retry=1 'mobile-oneapp.celcom.com.my'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	mobile-oneapp.celcom.com.my
Address: 183.171.255.19
Name:	mobile-oneapp.celcom.com.my
Address: 203.82.71.123