Learn what nameservers are, how they connect your domain to DNS records and hosting, and what happens when you change nameservers.
Nameservers are one of the most important parts of connecting a domain name to a website. They tell the internet where the DNS records for your domain are managed, which then controls where your website, email and other services point.
If you have ever changed hosting, connected a domain or moved email, you have probably seen nameserver settings. Understanding what they do makes domain setup and troubleshooting much easier.
Nameservers tell the internet where your domain's DNS records are managed. If you change nameservers, you are changing which DNS zone controls your website, email and other domain services.
When someone visits your domain, DNS needs to find the correct records for that domain. Nameservers act like the address book location. They do not usually host the website themselves; they point to the place where the domain's DNS instructions are stored.
Those DNS instructions may include A records for your website, MX records for email, TXT records for verification and CNAME records for subdomains.
Nameservers and DNS records are related, but they are not the same thing. Nameservers decide where DNS is controlled. DNS records are the individual instructions inside that control panel.
Changing a single A record may point your website to a new server while leaving email unchanged. Changing nameservers can move control of all DNS records, which is more powerful but also easier to get wrong if old records are not copied.
The biggest risk when changing nameservers is accidentally breaking email. If your old DNS zone has MX, SPF, DKIM or DMARC records and you move nameservers without recreating them, mail delivery may stop or become unreliable.
Before changing nameservers, take a copy of existing DNS records. This is especially important for business domains where email is already active.
Nameserver changes can take time to update across the internet. Some users may see the new DNS quickly, while others may still see old records for a while. This delay is often called DNS propagation.
During this period, it is sensible to keep the old hosting and email setup active until you are confident everything is resolving correctly.
If you are not sure which option is right for your website, start with our Start Here page or compare our UK Web Hosting services.
You can also explore VPS Hosting UK and VDS Hosting UK if your website needs more control, dedicated resources or room to grow. If you are moving a domain, always check website and email DNS records before changing nameservers.
Nameservers are the starting point for your domain's DNS. Once you understand that they control where DNS records are managed, it becomes much easier to connect domains, move hosting and avoid email problems during website changes.