shell:$ nslookup -timeout=2 -retry=1 'login.xfinity.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
login.xfinity.com	canonical name = login.xfinity.com.edgekey.net.
login.xfinity.com.edgekey.net	canonical name = e69781.dscx.akamaiedge.net.
Name:	e69781.dscx.akamaiedge.net
Address: 2.16.170.169
Name:	e69781.dscx.akamaiedge.net
Address: 2.16.170.166
Name:	e69781.dscx.akamaiedge.net
Address: 2600:140a:5000:17::17de:114c
Name:	e69781.dscx.akamaiedge.net
Address: 2600:140a:5000:17::17de:114b