DNS Wars – How Domain Speed Affects Website Success in 2025

You probably think that the speed of your website depends only on how optimised the source code is and the performance of your hosting provider’s server. However, the Domain Name System (DNS) is another key factor in this formula.

If you haven’t delved too deeply into how the Internet works, the DNS is the system that translates human-friendly domain names into machine-readable IP addresses. If this process is too slow for whatever reason, your site takes longer to load, and many impatient visitors move on to competitors.

Thanks to the introduction of new technologies such as AI and infrastructure development, the internet has become a huge market with incredibly high competition, so every millisecond counts. We’ve written this article to tell you how DNS speed determines the success of a web project so you can identify and fix the problem promptly.

What is DNS and How Does It Work?

Before we talk about the speed at which content loads on your website, let’s find out how DNS works. In the early days of the Internet, to get to any website, you had to type a numeric address (IP) into the URL bar.

However, because numeric codes are hard to remember, it was decided to replace them with human-readable alphabetic names, such as wikipedia.org. By associating domain names with their corresponding IP addresses, DNS performs a spoof every time you type the domain into the URL bar in your browser.

Let’s take a step-by-step look at what happens – hidden from your eyes – every time you try to go to a website directly when you type in its domain name (rather than from search engine results):

·  The internet browser first checks its cache for the presence of the corresponding IP address.

·  If there is no data in the cache, the browser sends a request to the resolver, which is the Internet provider’s server.

·  The resolver, in turn, makes requests to root servers, top-level servers, and authoritative domain servers.

·  As a result, the browser gets the required IP address and establishes a connection to the website you want to access.

Usually, all of the above is done in a fraction of a second. However, there are often delays – especially when the servers are overloaded with requests or are physically far away from you – which negatively affects the experience.

Figures and Facts about DNS and Site Load Speed

So, before your content starts to load quickly (or slowly if it’s poorly optimised), there’s a certain amount of time between the moment you make a request and the first response from the server (TTFB). According to recent Google research, a TTFB of 200 ms is optimal, while a delay of over 600 ms makes many internet users nervous.

According to DNSPerf, Cloudflare’s average DNS response time was around 21 ms, while some other ISPs were 3.5 times higher. While a 50ms difference may be insignificant, for a site with an audience of millions, it means an extra 50 seconds of waiting time cumulatively for all users.

If you want to reduce TTFB, you can perform a domain transfer to an ISP with a faster DNS through the convenient Spaceship domain transfer service. By doing this, you will reduce response time by 20-50%, depending on your current registrar.

How DNS Speed Affects SEO and User Experience

Back in 2010, Google started using site page load speed as one of the important ranking factors. However, in 2021, many more ranking factors were introduced as part of Core Web Vitals, resulting in an even greater impact of site load speed on your search ranking.

Since a slow DNS increases TTFB, it also leads to a worsening Largest Contentful Paint (LCP), which is today’s most important metric. For example, while the optimal LCP is about 2.5 seconds, an underperforming DNS can add up to 100-300 ms.

Tests show that even in the case of a relatively small DNS response time of 100 ms, sites lose a significant amount of organic traffic. Therefore, to stop losing valuable customers and potential profits, it may be time for you to switch to a faster DNS provider.

Did you know that 47% of users are likely to leave a site (before it loads) if they don’t see rendered content 2 seconds after clicking on a link? Therefore, a slow DNS increases the risk of abandonment, especially in the case of mobile traffic as delays on mobile devices are even longer.

Another interesting thing to know is that geography also affects DNS, i.e., the further away the server is from you, the longer the time it takes from sending a request to receiving a response. For example, physical distance can increase response times by 50 or even 100ms.

How to Choose a DNS Provider – Important Things to Consider

DNS providers differ in many ways. To understand which provider is right for you, consider the parameters that affect speed below:

·  Response time. For example, as mentioned above, Cloudflare is the absolute leader in this criterion.

·  Anycast. By directing DNS queries to the closest location on the network to the user, this technology solves the problem of latency caused by physical distance.

·  Data caching. The best ISPs store DNS records locally to reduce the load on servers.

·  Uptime. Thanks to modern technology, ISPs provide up to 99.99% working without delay for their hardware and software solutions.

Keep in mind that although it only takes 5-10 minutes to switch to a faster provider, you face some security risks. However, by following sound domain name security tips, you can avoid most problems while reducing site load times.

Optimising DNS for Speed

There are several time-tested ways to improve DNS performance:

·  Reduce Time-to-Live (TTL). This is a parameter that determines how fast records are cached. For example, you can set this value to 300 seconds, which will significantly reduce latency compared to the default value of 24 hours.

·  DNS Prefetch. Insert ‘<link rel=’dns-prefetch‘ href=’//example.com‘>’ in the header of your website so that queries are triggered in advance. However, note that this feature may not be supported by some web browsers, such as Safari on iOS devices.

·  Using CDNs. By caching content, these networks speed up DNS by 25-30%, which can have a significant impact on response times.

·  Conduct continuous monitoring. For example, you can use tools like DNSPerf to check real-time response from most locations around the globe.

Since mobile devices have become the most popular way to interact with online services (over 60% of traffic to websites comes from smartphones and tablets), every millisecond can make a difference. With Google planning to tighten Core Web Vitals even further and users waiting 1-2 seconds for a page to load, a slow DNS could be a bottleneck you can’t ignore in 2025.