shell:$ nslookup -timeout=2 -retry=1 'www0.assets.heroku.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
www0.assets.heroku.com	canonical name = d378b2dm1308t9.cloudfront.net.
Name:	d378b2dm1308t9.cloudfront.net
Address: 108.139.29.15
Name:	d378b2dm1308t9.cloudfront.net
Address: 108.139.29.42
Name:	d378b2dm1308t9.cloudfront.net
Address: 108.139.29.96
Name:	d378b2dm1308t9.cloudfront.net
Address: 108.139.29.80