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: 13.249.141.109
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.44
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.120
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:de00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:aa00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:3c00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:ae00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:da00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:e000:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:e600:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:2000:1d:4302:50c0:93a1