DNS

TTL and how to check TTL

DNS

TTL – Time to live is a value that signifies how long should the data be kept before discarding. It is commonly used in computers. In...

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Тools – DNS trace, Ping, Traceroute, Nslookup, Reverse lookup

DNS • 2 Comments

In this article, we will use few different tools that will help you troubleshoot and monitor your DNS and network....

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rDNS and PTR record explained

DNS

What is rDNS? You probably know already what is a forward DNS. It links the hostname/domain to the IP address. Now think from the opposite...

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A case study of the top 50 e-commerce sites and their DNS

DNS • 2 Comments

The recent Black Friday we again saw the news for record-breaking revenues and profits. Over the past few years, the web has gotten faster,...

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What is backup DNS?

DNS

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What is Sender Policy Framework, and how to setup SPF record?

DNS

Have you ever received complaining messages from your users about emails sent to them from your email server, without your knowledge? Or...

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8 DNS tools for testing your servers

DNS • One Comment

You are already a DNS user, and your server or website works great when you visit it from your computer. But that is not enough. You want...

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