shell:$ nslookup -timeout=2 -retry=1 'signup.webex.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
signup.webex.com	canonical name = d3ea8exdgggr3w.cloudfront.net.
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 3.167.183.9
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 3.167.183.127
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 3.167.183.100
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 3.167.183.90
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:5000:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:9200:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:3000:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:7000:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:fa00:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:cc00:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:f800:4:1e13:4f00:93a1
Name:	d3ea8exdgggr3w.cloudfront.net
Address: 2600:9000:25f3:7800:4:1e13:4f00:93a1