Domain Name System Archives

Zone transfer: What is it and how does it work?

Posted on July 4, 2022 by Dave

Today we will talk about zone transfer. First, we will explain its purpose and how it functions. Then we will explore what a zone file is, and for the final note, we will see the zone transfer vulnerability’s effects. So, let’s start.

Zone transfer: Definition

Duplicating DNS records from the Master DNS zone to the Backup DNS zone is the procedure known as zone transfer. This gives you the option to duplicate your DNS records on various alternative name servers. You will have higher availability as a result of finishing the transfer if one of the name servers fails. Additionally, faster DNS resolution will be advantageous if you run a worldwide website with users from all over the world and numerous presence locations (PoPs).

TXT record – Definition and details

Posted on June 23, 2022 by Dave

Today we will explore the TXT record. It is an exciting and helpful DNS record type. So, first, we will define its purpose and then move to the importance of implementing it. And the final stage of our article is to review what the TXT record looks like (its structure). So, without further ado, let’s get down to business.

Definition of TXT record

A TXT record is a DNS record that exposes text data to sources outside of your domain. Many TXT records can be found in a top-level domain name. Human-readable facts on servers, networks, databases, and other IT information are frequent in TXT records. Sender Policy Framework (SPF), DomainKeys (DK), and DomainKeys Identified E-mail (DKIM) are some of the applications for TXT records.

How does DNSSEC work?

Posted on May 10, 2022 by Dave

If you are browsing for what DNSSEC is and how it works, you came to the right place. In this article, we will focus on its primary purpose and its benefits. So, let’s explain it.

What does DNSSEC mean?

DNSSEC is a collection of protocols and specifications for securing the Domain Name System and its associated activities. From lookups to data transmission, it’s all here.

Authenticated denial of existence, cryptographic authentication of DNS information, and information integrity are all provided by these enhancements to DNS resolvers.

The Internet Engineering Task Force (IETF) invented it. Because the Domain Name System was not designed with security in mind from the start. Different vulnerabilities were discovered early on in its utilization. After that, DNSSEC was created. The creators picked the extension format for this system to make it easier to integrate with the existing DNS infrastructure.

Guide for choosing a DNS hosting provider

Posted on December 6, 2021 by Dave

How to start using DNS to your advantage? There are many DNS hosting providers out there, and all the big Cloud providers have DNS services. But it could be incredibly hard to choose. So, we have prepared this guide for choosing a DNS hosting provider so that you can get the right service.

What DNS features do you need?

There are many additional parameters inside the DNS plans. So what exactly do you need? Here are some of the most common features that you should know:

How to check DNS propagation?

Posted on November 23, 2021 by Dave

Through time, all businesses require changes to DNS records. But even you make such modifications fast, they won’t be visible immediately. This can be a bit frustrating, especially in urgent cases. Besides, taking too long could point to an issue. In any case, you will have to check how it is going.

Basics of DNS propagation.

DNS propagation is the time that it takes for DNS changes to be fully updated across the Internet.

Remember that modifications to DNS records can be made only on the authoritative DNS nameserver. And currently, most networks are really large. They integrate many servers, machines with different purposes, and all of them can be spread globally.

With this image in mind, you can easily understand why changes, small or big ones, take time to be completed. They have to be updated on plenty of machines!

Additionally, the process can face obstacles that can delay it even more. For instance, the DNS cache of the network’s servers. It totally contributes to making the network more agile, but it can delay the DNS propagation. They keep the most updated version of DNS records, during the time the TTL (time-to-live) each has configured remains valid. Once the TTL expires, recursive servers naturally will look for the last update. In other words, they won’t look for the update exactly at the moment you made DNS changes, but when their TTL points zero seconds.

DNS propagation – fully explained

The purpose of Domain Name System

Posted on November 12, 2021 by Dave

Domain Name System – Definition

The Domain Name System is also frequently called shortly DNS, is a decentralized hierarchical infrastructure. Thanks to it, the Internet is as simple and easy for people as it is nowadays. At its core, it includes a database with all of the existent domain names and the IP addresses associated with them.

When a user wants to visit a particular website, types its domain name. That triggers a long DNS process for finding its IP address (IPv4 or IPv6). The domain name has to be translated because machines don’t communicate with words but only with numbers. After the corresponding IP address of the domain name the user wants to visit is found, the browser is able to connect to the website.

Back in the days when the Domain Name System was not designed yet, it was a little bit more complicated to reach a website. It was necessary for users to type the long and difficult IP address, like 54.123.67.89, rather than a simple domain name, such as domain.com. Imagine what a memory challenge it was! The Domain Name system gave the opportunity for people to interact with the domain names and allowed machines to connect with their comfortable language (IP addresses).

History and components of DNS