DNS Record Types Explained

Hey buddy ,

Have you any Idea how when i put just domain name and browser provide you that domain content show on that browser .

So the question is how the browser reach that domain‘s server and grab their content and show us eon browser ?

we are just learn about this how these all thing have done by browser .

What is DNS :

DNS stand for Domain Name Server . Which work is like a phone-book (put name and get number ) so same thing done DNS , take Domain name and in the return give their IP address .

DNS has it’s type (DNS working different) :

A record :

• This record hold/contain IP address of domain

• A records hold IPv4 address

  | example.com | record type: | value: | TTL | | --- | --- | --- | --- | | @ | A | 192.0.2.1 | 14400 |

• TTL (Time to live) , it means if A records update then it take 240 minutes

AAAA record : This record hold IPv6 address of domain

Here is an example of an AAAA record:

CNAME record :

• Forward domain or subdomain to another domain , does NOT provide an IP address .

It means if someone solve DNS query of vishalcode.com then that got CNAME domain (chaicode.com), and dns query on chaicode.com then you got IP address (e.g.: 2.3.4.5) of vishalcode.com .

Vercel :

Vercel have do same thing, as you know may website host on vercel , have you thing what if vercel has crash or Vercel migrate his server (e.g. 76.76.1.1 → 95.95.1.1) so if all his user add A record only in his Domain then all user need to update A record . Because as you now in A record keep IP address of server . So what if i put CNAME record of Vercel, in my Domain (assume this domain host on vercel) , it means if even though vercel change it server i have no issue because cname.vercel.conm automatic point to vercel server . If vercel change it’s CNAME also then we also need to manually update CNAME in my Domain .

CNAME tell where original address

MX record :

• Mail exchange record these record directs email to mail server

• MX record route mail message accordance with smtp (simple mail transfer protocol)

  

TXT record :
The DNS `txt record` is contain data and these data may be Computer readable language or human readable language instruction .

it is use for many purpose , Domain Ownership verification , email spam prevention etc. .

NS record :

NS stands for ‘nameserver‘ , it tell to the internet where go to and find domain IP address .

Which Server has power to DNS control to this Domain. It means nameserver control DNS records

I hope you guys , this blog helps you !