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: 3.160.22.30
Name:	dkhgzb7twn7he.cloudfront.net
Address: 3.160.22.39
Name:	dkhgzb7twn7he.cloudfront.net
Address: 3.160.22.23
Name:	dkhgzb7twn7he.cloudfront.net
Address: 3.160.22.115
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:6000:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:9800:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:d000:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:de00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:2a00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:d800:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:6a00:c:b09a:6880:93a1
Name:	dkhgzb7twn7he.cloudfront.net
Address: 2600:9000:2507:ca00:c:b09a:6880:93a1