The (very) uneven distribution of DNS root servers on the Internet - Pingdom
DNS – Understanding it helps to debug it
Root name server - Wikipedia
CSCI-1680 DNS Based partly on lecture notes by Scott Shenker and John Jannotti Rodrigo Fonseca. - ppt download
The bare minimum a distributed system developer should know about: DNS - Ayende @ Rahien
Location of domain name root servers, 2018 - World Atlas of Global Issues
Influence Map of DNS Root Anycast Servers - CAIDA
What is a DNS root server? List of Root Servers - Why are there only 13?
File:Root Nameserver.svg - Wikimedia Commons
Cloudflare - The Web Performance & Security Company | Cloudflare
Location of domain name root servers, 2018 - World Atlas of Global Issues
ICANN | Application for Tax-Exempt Status (U.S.) | Appendix 13
DNS Measurements with RIPE Atlas Data | RIPE Labs
Packet Clearing House Report on Root Nameserver Locations | PCH
Fun Stuff – Roller Network
What is a DNS root server? List of Root Servers - Why are there only 13?
ROOT OPERATORS MEETING
Verisign's Perspective on Recent Root Server Attacks
The TCP/IP Guide - DNS Root Name Servers
i.root-servers.net | Netnod
Stéphane Bortzmeyer on Twitter: "@MrrAbdullah @PowerDNS_Bert traceroute is probably the best way to know. More complicated (but may be more reliable) dig +nsid @root-server-of-your-choice" / Twitter
DNS Root Servers - Tech-FAQ
DNS / nslookup - How to find the root servers ? - Fir3net
Root name server - Wikipedia
Domain Mondo | domainmondo.com: ICANN, IANA Functions, Internet DNS Root, Root Server Operators
Location of domain name root servers, 2018 - World Atlas of Global Issues