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

Non-authoritative answer:
Name:	beta.webex.com
Address: 108.156.107.74
Name:	beta.webex.com
Address: 108.156.107.35
Name:	beta.webex.com
Address: 108.156.107.105
Name:	beta.webex.com
Address: 108.156.107.69