Implement Domain Name System | Microsoft Press Store
Before Changing DNS Servers to OpenDNS or Google DNS, Read this!
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Communication Networks/DNS - Wikibooks, open books for an open world
DNS / nslookup - How to find the root servers ? - Fir3net
Use DNS Policy for Geo-Location Based Traffic Management with Primary Servers | Microsoft Docs
DNS server types | Cloudflare
Configuring a DNS Server in Raspberry Pi - Domotic Project
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i-DNS server locations
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How Domain Name Servers Work | HowStuffWorks
