shell:$ nslookup -timeout=2 -retry=1 'check.analytics.rlcdn.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	check.analytics.rlcdn.com
Address: 18.160.213.34
Name:	check.analytics.rlcdn.com
Address: 18.160.213.52
Name:	check.analytics.rlcdn.com
Address: 18.160.213.17
Name:	check.analytics.rlcdn.com
Address: 18.160.213.39
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:5000:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:7a00:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:ea00:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:200:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:7200:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:5400:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:9600:16:708:31c0:93a1
Name:	check.analytics.rlcdn.com
Address: 2600:9000:2873:a000:16:708:31c0:93a1