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

Non-authoritative answer:
app.heygen.com	canonical name = d2xlng2voi5hdv.cloudfront.net.
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.44
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.109
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.120
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.249.141.12
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:8200:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:1a00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:9200:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:0:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:3200:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:7200:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:d400:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:8400:1d:4302:50c0:93a1