DNS Outage: What Is It and Why You Want to Avoid It
“DNS server not responding” “Server not found” “DNS lookup failed” If you’ve seen any of these messages, you’ve experienced a DNS outage — probably as the
“DNS server not responding” “Server not found” “DNS lookup failed” If you’ve seen any of these messages, you’ve experienced a DNS outage — probably as the
The internet operates so seamlessly it can feel like magic. You type a website address, and in an instant, you’re there. This rapid, reliable connection
The Domain Name System (DNS) is the foundational directory of the internet, a critical piece of infrastructure that directs all online traffic. Yet, its management
In today’s digital economy, availability is not a feature; it’s an expectation. When a server or application goes down, the consequences can be immediate and
Your website is the digital front door to your business. If the line is too long, customers may walk out. Online, those long lines are
Most organizations are familiar with the risks of volumetric Distributed Denial of Service (DDoS) attacks, which can quickly overwhelm digital infrastructure and knock critical services
A domain name is one of the most valuable digital assets an organization owns. Beyond serving as the address customers type into their browsers, it
Call it what you will—the internet’s phone book, address book, or GPS—the Domain Name System (DNS) is how we find our way online. Without it,
The Domain Name System (DNS) is the behind-the-scenes protocol that enables internet navigation. It works by translating human-friendly domain names into numerical IP addresses, allowing
Every internet request starts with the domain name system (DNS). But, if DNS is the internet’s phonebook (or GPS, or post office—take your pick), how
Just like the human body, your digital infrastructure needs checkups to perform at its best. Domain health checks are essential for ensuring that all systems
When providing the best online experience for users, speed is of utmost importance. While there are many ways to boost site performance, caching is one
Product
Integrations
Resources
General
Login
Cybersecurity Insights
Directly to your inbox once a month.
© 2025 DigiCert, Inc. All rights reserved. Privacy Policy | Legal | Cookie Policy | Do Not Sell My Personal Info | Sitemap