shell:$ nslookup -timeout=2 -retry=1 'blackhole.customerly.io'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
blackhole.customerly.io	canonical name = dkhgzb7twn7he.cloudfront.net.
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.128
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.92
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.22
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.102
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:a200:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:6800:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:800:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:aa00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:8200:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:3000:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:2e00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:5400:c:b09a:6880:93a1