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

Non-authoritative answer:
web.webex.com	canonical name = d3l8kopw1d3uiv.cloudfront.net.
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 18.172.134.126
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 18.172.134.6
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 18.172.134.81
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 18.172.134.41
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:4200:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:c200:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:f600:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:7600:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:d200:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:ec00:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:4600:19:a33:91c0:93a1
Name:	d3l8kopw1d3uiv.cloudfront.net
Address: 2600:9000:24bf:b400:19:a33:91c0:93a1