Comments on: A visual explanation of how DNS lookups work https://www.pingdom.com/blog/a-visual-explanation-of-how-dns-lookups-work/ Website Performance and Availability Monitoring | Pingdom Sat, 22 Dec 2018 04:35:45 +0000 hourly 1 https://wordpress.org/?v=6.4.3 By: Juan https://www.pingdom.com/blog/a-visual-explanation-of-how-dns-lookups-work/#comment-7563 Sat, 22 Dec 2018 04:35:45 +0000 http://royalpingdom.wpengine.com/?p=2768#comment-7563 In reply to Fred.

There are more than 13 root servers. There are place to only 13 IPs in an unfragmented UDP packet so only 13 IPs can be sent that can match any of hundred of servers which share the same IP (one of those 13 each) through Anycast: https://en.wikipedia.org/wiki/Anycast

]]> By: Brijesh https://www.pingdom.com/blog/a-visual-explanation-of-how-dns-lookups-work/#comment-7562 Wed, 03 Jun 2015 04:12:01 +0000 http://royalpingdom.wpengine.com/?p=2768#comment-7562 In reply to saosangmo.

There are only 13 root server total, in the world.

]]> By: Fred https://www.pingdom.com/blog/a-visual-explanation-of-how-dns-lookups-work/#comment-7561 Sat, 20 Jun 2009 11:01:46 +0000 http://royalpingdom.wpengine.com/?p=2768#comment-7561 Hi,
the 13 root servers are a standard. Worlwide there are only 13 and that’s it. You can try yourself the process of dns resolution by having a quick look at a dns traversal tool like the one you can find at http://www.dnsqueries.com/en/dns_traversal.php
Regards
Fred

]]> By: saosangmo https://www.pingdom.com/blog/a-visual-explanation-of-how-dns-lookups-work/#comment-7560 Wed, 10 Jun 2009 12:58:57 +0000 http://royalpingdom.wpengine.com/?p=2768#comment-7560 Nice one. But I can’t understand why is 13 root servers (or 13 number means?”)

]]> By: Mark Mathson https://www.pingdom.com/blog/a-visual-explanation-of-how-dns-lookups-work/#comment-7559 Mon, 08 Jun 2009 19:14:16 +0000 http://royalpingdom.wpengine.com/?p=2768#comment-7559 Yes, it is worth sharing.

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