Tag: DNS

DNS DNS records Network Website

Why is Secondary DNS service beneficial?

by Boris

Today we will talk about the Secondary DNS service. It provides additional authoritative nameservers to domain name owners to answer domain queries. But if you want to get deep into its purpose, why it is so important, and how you can get it, you are on the right article.

Secondary DNS service purpose

Secondary DNS is a service that can be used with your Primary DNS. It adds to your name server network by storing copies of the zone file holding your domain’s DNS records. These servers can replicate your domain’s Primary DNS zone file and provide additional points of presence (PoPs). So even if your Primary DNS is down, users can resolve your domain much faster this way! Isn’t it wonderful?

Why is a Secondary DNS server important?

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Cyber attacks DNS Network Website

What causes a DNS outage?

by Boris

What exactly is a DNS outage?

A DNS outage, also known as DNS downtime, is a period of time when the DNS is not functioning correctly. This means that if you look up the domain name, you won’t see its IP address. Instead, users will make DNS requests in order to reach your domain. The DNS recursive server will request the domain’s authoritative nameserver, but it will receive an error message as a response.

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DNS records

Fundamental DNS records you should know.

by Boris

DNS records explained.

DNS records set specific rules in a DNS zone. They are entirely made of text, which makes them very light. Zone files are the place where the various types of DNS records are stored.

Every time when a user makes a request, the DNS servers are searching for a particular DNS record type. As a result, there are many different records for the various kinds of requests that could be made. So, let’s make things a little bit more precise and explain some of the most fundamental DNS records.

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Commands

Most frequently used DNS commands

by Boris

These DNS commands are the most commonly used when we are talking about DNS troubleshooting. This is because they are easy to use and can provide you information about your DNS records and how your network is operating. It doesn’t matter if you are a Linux, Windows, or macOS user. You have multiple commands included in your OS. So let’s see which are the most frequently practiced DNS commands and how you can use them.

Nslookup command

The NSLookup command is one of the frequently used DNS diagnostic commands. The beneficial thing about it is that it is present on all of the popular operating systems (OS). With it, you are able to see all kinds of DNS records. Also, it includes various options.

Use the NSLookup to see all the available DNS records. In the command line, write: 

$ nslookup -type=any domain.com

It is going to show you all of the available DNS records for the particular domain. If you want to see a specific DNS record, change the type to NS, A, AAAA, MX, SOA, etc. After the DNS type, you can put another domain name or IP address.

Learn everything about the Nslookup command!

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