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

Non-authoritative answer:
media.admob.com	canonical name = adwords.l.google.com.
Name:	adwords.l.google.com
Address: 173.194.194.102
Name:	adwords.l.google.com
Address: 173.194.194.101
Name:	adwords.l.google.com
Address: 173.194.194.139
Name:	adwords.l.google.com
Address: 173.194.194.113
Name:	adwords.l.google.com
Address: 173.194.194.138
Name:	adwords.l.google.com
Address: 173.194.194.100
Name:	adwords.l.google.com
Address: 2607:f8b0:4001:c10::71
Name:	adwords.l.google.com
Address: 2607:f8b0:4001:c10::8b
Name:	adwords.l.google.com
Address: 2607:f8b0:4001:c10::65
Name:	adwords.l.google.com
Address: 2607:f8b0:4001:c10::66