shell:$ nslookup -timeout=2 -retry=1 'mtalk.google.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
mtalk.google.com	canonical name = mobile-gtalk.l.google.com.
Name:	mobile-gtalk.l.google.com
Address: 74.125.202.188
Name:	mobile-gtalk.l.google.com
Address: 2607:f8b0:4001:c68::bc