Dо you want to learn more about the different records? If yes, you are in the right place. Here you can find the list of the most popular DNS record types.
1. SOA record
The Start Of Authority record, or SOA record for short, is the first on our list. It is the one that must be comprehended. Why? It represents the beginning of the Authoritative DNS zone. This DNS record contains a wealth of data for the DNS zone. If you want your network to run smoothly and without errors, you’ll need this DNS record. It sends all requests to the principal DNS server. In addition, the SOA record contains the information and contact information for the DNS administrator. A variety of parameters, such as the domain serial number, are also included. It’s worth noting that each DNS zone should have just one SOA record.
What is TTL?
Time To Live (TTL) sounds like a horror movie, but luckily it is not related to people. It is the value that shows how long the information should be kept in a particular device. There are many pieces of data that have their own TTL value. Here we will see DNS TTL and CDN TTL.
When we are talking about DNS TTL, it is related to the time that the DNS resolvers must keep the DNS records in their cache. Each of the DNS records will have its TTL value. There are some with longer TTL because there is less chance that the value will change and others with shorter TTL value, where there are often changes.
Imagine this situation. You have finally decided to truly manage your DNS. You have selected a DNS service provider, you have created master and secondary zones, and you have added all the DNS records that you will need. You spend a lot of time and effort. And after everything is ready, you want to check and… there are no changes! Don’t worry. The DNS propagation takes time.
What is DNS propagation?
It is a process to update the changes that you make in your DNS. After editing or creating new DNS records, they are saved in the authoritative DNS nameserver. That is ok, but what about all the rest of the DNS name servers? The cache memory of the recursive DNS servers will still keep the older versions of the DNS records based on their TTL value.
The DNS propagation is the time it will take to propagate, to update the changes to all of the recursive name servers.
4 factors that affect the DNS propagation speed