shell:$ nslookup -timeout=2 -retry=1 'api.staging01.xfinityspeedtest.comcast.net'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	api.staging01.xfinityspeedtest.comcast.net
Address: 13.225.196.3
Name:	api.staging01.xfinityspeedtest.comcast.net
Address: 13.225.196.10
Name:	api.staging01.xfinityspeedtest.comcast.net
Address: 13.225.196.111
Name:	api.staging01.xfinityspeedtest.comcast.net
Address: 13.225.196.72