shell:$ nslookup -timeout=2 -retry=1 'portabilidad.att.gob.bo'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
portabilidad.att.gob.bo	canonical name = ecrb.att.gob.bo.
Name:	ecrb.att.gob.bo
Address: 190.129.78.154