domain name system - Is delegated DNS server authoritative server? - Server Fault
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DNS server types | Cloudflare
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Root name server - Wikipedia
Understanding DNS Forwarders and Root Hints in Windows DNS Server
Introduction to DNS
Why Only 13 root DNS | TechieMaster.in
What are the root DNS servers, and where are they located? - Quora
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Comparing Root Server Performance Worldwide | ThousandEyes
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What are root name servers? | Netnod
Communication Networks/DNS - Wikibooks, open books for an open world
How Domain Name Servers Work | HowStuffWorks
Communication Networks/DNS - Wikibooks, open books for an open world
Definition of DNS | PCMag
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