Network and Internet
What Is DNS and How Do You Change It?
DNS, Domain Name System is a domain name system. It is a relationship between addresses and service information on the network with domain names that people use. What is DNS, what it works, how to change the computer uses DNS resolver while answering the question of how to change the records of the domain name are separate processes.
DNS resolver and authorized DNS difference
DNS resolution of the device makes queries to find information on the domain name and may cache the result. Authorized DNS is the service that records of domain name are managed. Selecting different stabilizer on computer does not change the server address of your website.
For example, if you’re going to new server domain registrations are updated. If there is only a problem of profiling on a computer, then DNS settings of the device or network are reviewed. It can lead to unnecessary service interruption that mix two situations.
Basic DNS records
- A record: link the domain name with IPv4 address.
- AAAA registration: Specifies IPv6 address.
- CNAME: defines nickname for attaching to another domain.
- MX: Specifies servers used in email purchase.
- TXT: It carries text information such as verification and some email policies.
- NS: Specifies authorized name servers for domain name.
How to change DNS controlled?
The existing settings are recorded for the resolution change in the device; appropriate addresses are defined in the network settings of the operating system. Local domain name and ID services in corporate networks may require private DNS. Therefore, internal applications should be checked before going to an open solution for everyone.
Copy of existing records if domain registration is changed. Web and email registrations are evaluated separately. The new target is verified, the registration required is updated and the return step is prepared. If the Ad servers are changed, all region records must be found in new service.
TTL and post-change test
TTL affects the retention time of a DNS response in cache. Change may not appear at the same time in different resolutions; Pre-stored records can be used until expire. It is not correct to give a fixed spread time for each change.
Website, HTTPS and email are individually tested. The root area is controlled to go to the right target of www. DNS change does not increase the physical speed of internet connection and does not automatically carry the web content. Passing to the new IP requires that the application and certification on the server is also ready.
Frequently Asked Questions
Does DNS change improve internet speed?
Ad may affect the resolution time; does not increase the bandwidth of the subscription.
What happens if the MX record is deleted?
The email from domain name may be affected. The email records should also be protected during the website transportation.
Is it the same as www and root domain?
Different DNS names. Registration and server routing behavior should be verified for two.
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