Tag Archives: DNS

What does DNS cache mean?

The Domain Name System (DNS) is a keystone for the Internet to work as well and easily as it does for users. But to be vital means, it’s always busy, hard demanded and sometimes, even stressed.

Balancing this and not risking the important mission DNS has, different mechanisms and technology have been developed to make some tasks easier. The objective is to reduce work for the system and devices and accelerate the answer to users’ requests. 

And that is the case with DNS cache!

How to flush the DNS cache?

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Cheat sheet with the most common DNS records

The Domain Name System (DNS) is pretty extensive, and DNS records help for its easier management. So, for every beginner it is essential to know and understand the fundamental ones. Here is a short but very useful cheat sheet with the most common DNS records! 

A brief introduction to DNS records 

DNS record is a simple instruction related to a particular domain name. The entire collection of records is gathered in a zone file in the DNS zone. The authoritative DNS server of the specific domain name stores all of this information. Each record has its purpose and function. That is why all of them are very fundamental for the proper operation of the domain.

DNS records – Cheat sheet

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Easy guide for checking DNS propagation.

You make some urgent modifications to your DNS records. An hour later, your boss calls you complaining because changes are not visible. There are two choices. You get very nervous, not understanding what’s wrong. Or you know perfectly what DNS propagation is, therefore you can totally confidently answer to your boss that he has to be patient and wait for this process to be completed.  

For online business owners and administrators, DNS propagation can be a cause of constant headaches. Or not, if you learn its details. That’s why we prepared for you this easy guide for understanding and checking the DNS propagation process.

What is DNS propagation?

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SPF record – What is it?

SPF record explained.

SPF record stands for Sender Policy Framework record is a DNS (Domain Name System) record that specifies essential information for a domain name. It points to the outgoing mail server that is responsible for the particular domain. The MX (Mail eXchanger) record serves to show which email servers are responsible for the incoming emails for the domain. On the other hand, SPF records indicate which email servers qualified for sending emails on behalf of the domain name.

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DNS resolution – overview

Have you ever wondered how you can access so easy, so fast, a website on the Internet? 

If you get curious about how this magic happens, DNS resolution is the clue you need to follow.

What is DNS resolution?

Domain name system (DNS) resolution is the process of translating the domain name you type into your browser into the corresponding IP address of that domain. Without the IP address, the domain you search for can’t be located and loaded.

What to do if the DNS resolution is not working?

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​What is a DNS outage?

Imagine this. You are an owner of a large e-commerce site. It is Black Friday, the biggest online promotion that you have, and you are eager to see how the site is going on. You type your domain name into your browser and… “Oh no!” “It is not opening. This is a disaster!” What is going on! You are experiencing a DNS outage that might completely devastate your promotion!

​So, what is this DNS outage?

DNS outage is the time when your DNS is not functioning for some reason (your nameservers were attacked, or they were saturated with too strong traffic, etc.), and that does not allow the domain resolution of your domain name to its IP address. The DNS resolution is the first step to enter a site. The browser won’t know where your website is hosted without it, and it can’t find its content.

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