shell:$ nslookup -timeout=2 -retry=1 'umc-cdn.secb2b.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
umc-cdn.secb2b.com	canonical name = d19tvvpg56437g.cloudfront.net.
Name:	d19tvvpg56437g.cloudfront.net
Address: 3.168.37.2
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:fa00:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:6600:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:aa00:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:2800:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:ba00:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:7400:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:d800:14:a488:cf07:d461
Name:	d19tvvpg56437g.cloudfront.net
Address: 2600:9000:27fb:2000:14:a488:cf07:d461