shell:$ nslookup -timeout=2 -retry=1 'js.adsrvr.org'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
js.adsrvr.org	canonical name = dg2iu7dxxehbo.cloudfront.net.
Name:	dg2iu7dxxehbo.cloudfront.net
Address: 3.171.61.81
Name:	dg2iu7dxxehbo.cloudfront.net
Address: 3.171.61.62
Name:	dg2iu7dxxehbo.cloudfront.net
Address: 3.171.61.18
Name:	dg2iu7dxxehbo.cloudfront.net
Address: 3.171.61.36