What is wrong with linking a domain through an A record? Why use NS?

M

Memedia2017-10-02 11:08:31

JavaScript

Memedia, 2017-10-02 11:08:31

Many landing page builders ask you to set up NS records for linking a domain.
Why not A record? What is the fundamental difference? After all and with A record works.

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4 answer(s)

S

Spheniscus, 2017-10-02
@Memedia

I will explain as I know and I can
. A record - domain binding with ip (test.com - 127.0.0.2)
CNAME - label/link to another record. For example, when assigning a CNAME to a demo.test.com record, you will need to specify the record to which it refers (for example, test.com). Subsequently, changing the test.com A record (indicating a different address), it will also change the demo.test.com
NS record - the address of the DNS server that will be responsible for matching the domain and ip. Those. you had all records configured on the DNS server 127.0.0.3, and you specified the NS record 127.0.0.4 and the previously configured records became unavailable (except when NS servers exchange information about domains with each other)

M

Memedia, 2017-10-02
@Memedia

Some more ask for A record + CNAME.
I want to know which is more reliable.

A

affklb, 2017-10-04
@affklb

A and NS are completely different things, which is better / more reliable - sounds about the same as "which is better - air conditioning or washing machine?". For the domain to work, both types of records are needed (another question is whether you manage them yourself or the hoster does it for you). And domain registration / DNS hosting / website hosting are also three different things. Try to raise your DNS-server - you will understand everything.