Behind every business domain name there are usually four separate services. Domain registration is your right to use the name. DNS is the set of records saying where the name points. Website hosting serves the site. Email hosting holds the mailboxes. One company may provide all four, or four different companies may. What matters is knowing who provides each one, and that the domain is registered to your business with a login you control.
The four services behind one domain name
| Service | What it is | Who usually provides it | If it lapses or breaks |
|---|---|---|---|
| Domain registration | Your right to use the name, renewed every year or every few years | A registrar: 123 Reg, IONOS, GoDaddy, Namecheap, Cloudflare and many others | Website and email both stop. After a grace period the name can be released and registered by someone else |
| DNS hosting | The records that point the name at your website, email and other services | Usually the registrar by default; sometimes the web host or a specialist such as Cloudflare | Website and email can both stop working |
| Website hosting | The server or platform that stores and serves the site | A traditional hosting company, a site builder such as Wix, Squarespace or IONOS Website Builder, or a platform such as Vercel or Netlify | The website goes offline. Email is unaffected if it is hosted elsewhere |
| Email hosting | The mailboxes, and the servers that receive and send your email | Microsoft 365, Google Workspace, the registrar's own email, or mailboxes included with a hosting package | Email stops. The website is unaffected |
The nameservers set at the registrar decide where the DNS lives, and the DNS records decide where the website and email live. That chain is why a mistake in one place can take out services that seem unrelated.
Why they end up tangled
Registrars and hosts like to sell everything together: register a domain and you are offered hosting, email and a website builder in the same basket. That is convenient on day one and causes most of the confusion later, because nobody writes down which parts of the bundle are actually in use.
The usual result is a business that knows it pays "the hosting company" something every year, but not whether that payment covers the domain, the email, the website or all three. Then it decides to change one of them.
Who should own the domain
The domain is the one piece you cannot easily replace. Your website can be rebuilt and your email can be moved, but if you lose control of the name, everything that depends on it goes with it.
It should be registered in the business's name, in an account you can log into yourself, with renewal notices going to an email address someone actually reads. If a web designer or agency registered it in their own account, that is common and usually innocent, but ask them to move it into an account in your name. A good designer will do it without fuss.
How to find out who provides what
You can work most of this out without logging into anything.
- Registrar: a WHOIS lookup on the domain names the registrar. For .uk domains, Nominet's WHOIS service shows it.
- DNS host: look up the domain's nameservers with any online DNS lookup tool. The names usually give the provider away; nameservers ending in cloudflare.com, for example, mean the DNS is at Cloudflare.
- Email host: look up the domain's MX records. Records ending in mail.protection.outlook.com mean Microsoft 365; records at google.com mean Google Workspace. Anything else is usually the registrar or the web host.
- Website host: whoever you pay for the website, or whoever the domain's A record points to.
Write the four answers down, with the login for each, and keep them somewhere the business can find them without you.
What this means when something changes
Moving the website means changing the web records only. Email carries on untouched. Can I move my website without moving my email? explains which records those are.
Changing email provider means changing the MX records and the email authentication records, and moving the mailboxes. The website is not affected.
Moving the domain to another registrar can quietly move the DNS too, if the old registrar was hosting it. Check where the DNS lives before transferring, and make sure every record will exist on the other side.
Changing nameservers moves all the DNS at once. What happens when you change nameservers explains the safe order.