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:e200:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:4200:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:e00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:b600:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:ae00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:8000:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:600:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:212f:4600:1d:4302:50c0:93a1