shell:$ nslookup -timeout=2 -retry=1 'blackhole.customerly.io'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
blackhole.customerly.io	canonical name = dkhgzb7twn7he.cloudfront.net.
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.22
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.92
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.128
Name:	dkhgzb7twn7he.cloudfront.net
Address: 18.154.185.102
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:4200:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:da00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:ee00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:9200:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:9a00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:dc00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:0:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:ba00:c:b09a:6880:93a1