Re-add note on Advanced NS vs Custom NS to concept page

Author: RebeccaTamachiro

src/content/docs/dns/foundation-dns/advanced-nameservers.mdx

@@ -12,6 +12,10 @@ Advanced nameservers included with [Foundation DNS](/dns/foundation-dns/) offer
 
 Consider the sections below for details about advanced nameservers, and refer to [Set up advanced nameservers](/dns/foundation-dns/setup/) to learn how to enable this feature.
 
+:::note
+<Render file="ns-advanced-vs-custom" />
+:::
+
 ## Anycast network groups
 
 To increase resiliency, advanced nameserver IPs are advertised by only one of two <GlossaryTooltip term="anycast">anycast</GlossaryTooltip> network groups.