shell:$ nslookup -timeout=2 -retry=1 'topup.ais.co.th'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
topup.ais.co.th	canonical name = topup.ais.co.th.cdn.cloudflare.net.
Name:	topup.ais.co.th.cdn.cloudflare.net
Address: 104.17.198.8
Name:	topup.ais.co.th.cdn.cloudflare.net
Address: 104.17.199.8
Name:	topup.ais.co.th.cdn.cloudflare.net
Address: 2606:4700::6811:c708
Name:	topup.ais.co.th.cdn.cloudflare.net
Address: 2606:4700::6811:c608