shell:$ nslookup -timeout=2 -retry=1 'internet.itelcel.com.mx'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
internet.itelcel.com.mx	canonical name = itelcel.com.mx.
Name:	itelcel.com.mx
Address: 212.56.43.47