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

Non-authoritative answer:
app.heygen.com	canonical name = d2xlng2voi5hdv.cloudfront.net.
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.12
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.44
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.120
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.109
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:a400:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:a600:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:d600:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:8000:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:1400:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:5c00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:ee00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:3000:1d:4302:50c0:93a1