shell:$ nslookup -timeout=2 -retry=1 'app.heygen.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
app.heygen.com	canonical name = d2xlng2voi5hdv.cloudfront.net.
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.225.196.34
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.225.196.74
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.225.196.97
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 13.225.196.37
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:3400:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:9e00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:7000:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:3c00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:6e00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:d000:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:cc00:1d:4302:50c0:93a1
Name:	d2xlng2voi5hdv.cloudfront.net
Address: 2600:9000:21a2:f800:1d:4302:50c0:93a1