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DNS 101 For Web Developers

Joel Varty on September 25, 2019

As web developers, DNS is one of the least understood aspects of the internet. It's also one of the most important, as it's the glue that links you...
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C.S. Rhymes

Top tip, if you transfer your domain, remember to set your dns settings on your new provider... 🤦‍♂️(speaking from personal experience)

Also I found using dig www.yoursite.com a useful tool to see where domains redirect to.

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Joel Varty

Nice tip!

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Andreas Jakof • Edited

Since IPv4 is considered "historic" for a while now, there is another record type, which is becoming more and more important:

AAAA Records are much like A Records, but instead of using IPv4-Addresses, they map the name to an IPv6 Address.

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Andreas Jakof

Just for some comparison of address space between IPv6 and IPv4

IPv4: 2^32  =                                       4,294,967,295 
IPv6: 2^128 = 340,282,366,920,938,463,463,374,607,431,768,211,456
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Joel Varty

Agreed! This is going to be more and more important moving forward!

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Pim • Edited

Amazing article and such an important subject that is often looked past. Also important to do a DNS Leak test!

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Alex Leonhardt

Just the title reminded me of twitter.com/ryan_sb/status/7634543... :)

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SyntaxSeed (Sherri W)

This is great! Would love to see a follow up with the other record types.