When organisations talk about protecting their websites, the conversation usually revolves around firewalls, hosting providers or application security. However, there is a critical piece of infrastructure that is often overlooked and when it fails, your website simply disappears from the internet.
That infrastructure is the Domain Name System (DNS).
Before a visitor ever reaches your server, before a firewall inspects traffic, before your application even begins to load, DNS must first tell the internet where your website lives. If that process fails, your website cannot be reached. It does not matter how resilient your servers are or how powerful your hosting infrastructure is. If DNS stops responding, users simply cannot find you.
This is why one of the cheapest and most effective ways to protect a website from going offline is also one of the least discussed: Anycast DNS.
DNS acts as the contact directory of the internet. Every time someone types your domain name into a browser, a DNS lookup converts that domain into the IP address of the server hosting the site. If DNS servers fail to respond, browsers cannot locate the website and the result looks exactly like a full website outage.
Many organisations assume that DNS is already highly resilient by default. In reality, that is not always the case.
Traditional DNS setups may rely on only a small number of servers, sometimes even located within the same region. If those systems become overloaded or unavailable, DNS resolution can slow dramatically or stop entirely.
This creates a single point of failure at the very start of the user journey and when DNS fails, the entire website effectively vanishes.
This is where Anycast DNS comes in.
Anycast is a network architecture where multiple DNS servers across the world share the same IP address. When someone makes a DNS query, internet routing automatically directs the request to the closest available server.
Instead of relying on one DNS location, the workload is distributed across many.
This delivers several important benefits:
If one node in the network becomes unavailable, traffic is simply routed to the next closest one. In most cases, users never notice anything happened.
Not every domain in a portfolio carries the same level of risk if it goes offline.
Some domains are simply informational, others however, are central to how an organisation operates online.
These are what we refer to as mission critical domains. Mission critical domains typically include:
Corporate websites
E-commerce platforms
Customer portals
Login and authentication systems
Email infrastructure domains
If these domains fail to resolve, the consequences can be immediate through lost revenue, interrupted services and reputational damage.
For domains like these, resilient DNS infrastructure is not a luxury, it is essential.
This is precisely why Anycast has become a standard architectural approach across the internet itself.
Many parts of the global DNS root server system rely on Anycast networks to ensure DNS queries can always be answered, regardless of regional outages or traffic spikes.
The principle is simple, distribute infrastructure globally so that no single failure can take a system offline. Yet many organisations still rely on DNS setups that lack this level of resilience.
When organisations review their website resilience strategy, they often look at expensive solutions:
Multi-region hosting environments
Complex failover infrastructure
Advanced security systems
Dedicated DDoS mitigation services
All of these can be valuable, but if DNS fails, none of those systems matter.
That is why Anycast DNS is often the most effective step organisations can take to improve website availability. It strengthens the very first step of the internet connection process and because it sits outside your hosting environment, it protects your website regardless of where or how it is hosted.
However, one aspect of Anycast DNS that is rarely discussed is pricing.
Most providers charge based on query traffic, which at first glance seems reasonable. The more DNS requests your domain receives, the more you pay, but there is a problem with this model. Mission critical domains are usually the most heavily used domains in an organisation’s portfolio. Which means the more successful your website becomes, the more expensive your DNS becomes.
At Lexsynergy, we take a different approach.
Our Anycast DNS service is offered on a flat fee basis, rather than charging based on traffic volumes. The underlying infrastructure is comparable to other providers’ Anycast DNS solutions, but the pricing model removes the unpredictability that often comes with traffic based billing.
By removing traffic based billing:
Costs remain predictable
Budgeting becomes easier
Growth in traffic does not lead to escalating DNS bills
In short, it provides organisations with a more affordable option that does not punish them for success. So, for mission critical domains, where traffic is naturally high and risk appetite is lowest, our Anycast DNS pricing model makes a significant difference.
If your DNS fails, your website effectively disappears.
Visitors cannot reach your servers, customers cannot access your services and your online presence becomes temporarily invisible.
For organisations looking for the cheapest way to protect their website from going offline, strengthening DNS resilience should be one of the first steps.
Anycast DNS achieves this by distributing DNS infrastructure globally, eliminating single points of failure and absorbing traffic spikes or attacks.
And when delivered with Lexsynergy’s flat pricing model rather than traffic based billing, it becomes a predictable and affordable part of a website resilience strategy.
For mission critical domains, it is one of the simplest and smartest investments you can make.
Deutsche Bahn’s large scale DDoS disruption highlights why Anycast DNS is essential for protecting front facing and critical online services through resilient, distributed and always available domain infrastructure.
Fed up with hidden fees and long response times from your domain registrar?
One common reason is DNS failure. Even if your web servers are fully operational, users still need DNS to translate your domain name into the server’s IP address. If DNS servers fail to respond, browsers cannot locate the website and it will appear offline.
Resilient DNS infrastructure, such as Anycast DNS, helps prevent this by distributing DNS servers across multiple locations so queries can still be answered even if one system fails.
Sudden traffic surges can overwhelm DNS infrastructure if it is not designed to scale. Every visitor must perform a DNS lookup before reaching your website, meaning DNS servers often receive far more requests than the web servers themselves.
If those DNS systems become overloaded, queries can fail and the website may appear unreachable. Anycast DNS helps distribute traffic across multiple global servers, reducing the risk of DNS overload during peak traffic events.
DDoS attacks often target infrastructure that sits in front of your website, including DNS systems. By flooding DNS servers with requests, attackers can prevent legitimate users from resolving your domain name.
Using globally distributed DNS infrastructure helps mitigate this risk. Anycast networks spread traffic across multiple locations, making it significantly harder for attackers to overwhelm a single system.
Regional network outages or routing problems can sometimes prevent users in certain locations from reaching your DNS servers. If your DNS infrastructure is concentrated in a single region, those users may experience delays or failures resolving your domain name.
Anycast DNS improves reliability by placing DNS servers in multiple geographic locations, allowing users to resolve your domain from the nearest available server.
Elevate Your Domain Strategy with Cost-Effective, Business-Focused Solutions.
DNS outages can occur for several reasons, including:
Using distributed DNS infrastructure helps reduce these risks by removing single points of failure.
Improving website resilience typically involves multiple layers of protection, including reliable hosting, redundancy and security controls. However, DNS resilience is often overlooked.
Deploying globally distributed Anycast DNS infrastructure ensures that users can still resolve your domain name even if individual servers or regions experience problems.
While hosting failures and application errors can cause downtime, infrastructure issues such as DNS outages and network disruptions are also common causes. Because DNS sits at the beginning of every connection, problems at this layer can make an entire website appear offline.
Yes. DNS resolution is the first step in loading a website. If DNS servers are located far from the user or are under heavy load, it can introduce delays before the website even begins to load.
Globally distributed DNS networks help reduce latency by directing queries to the nearest available server.
Without redundancy, DNS infrastructure becomes a single point of failure. If the primary DNS server becomes unavailable, users cannot resolve the domain name and the website becomes unreachable.
Redundant DNS infrastructure ensures that queries can still be answered if individual systems fail.
Intermittent website availability can occur when DNS infrastructure is under strain or when queries are routed to an unavailable server. This can cause some users to reach the website while others experience errors.
Using distributed DNS infrastructure helps stabilise resolution by spreading requests across multiple servers.
One of the most cost effective ways to improve website reliability is to ensure DNS infrastructure is resilient. Because DNS sits at the start of every connection, strengthening it helps prevent outages that would otherwise make the website unreachable.
Technologies such as Anycast DNS distribute DNS servers globally, improving reliability without requiring major changes to existing hosting infrastructure.