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Hosting Terms

What is Subdomain?

What Subdomain really means, with the jargon taken out — plus the example that makes it obvious.

Straight answer first

A subdomain is a named division of your domain — blog.example.com, shop.example.com — and each one can carry its own content or its own application.

Below: the fuller explanation, a picture that makes it stick, why it matters in practice, and where you will actually run into it.

Written by the Hosting Seller staff · Checked 1 August 2026

0

Terms left unexplained

100+

Definitions, cross-linked

Real

Examples from real kit

Free

To read, naturally

Technically it is a DNS entry beneath your domain, pointed wherever you like, with its own folder on the hosting side. Creating one is free and immediate, and there is nothing to register beyond the parent name you already hold.

Search engines treat subdomains as semi-detached, which is why sections of content usually belong in a subdirectory such as /blog, while genuinely separate applications — app., portal. — sit comfortably on subdomains.

The picture that makes Subdomain stick

Departments inside one building. The shop front, the trade counter round the side, the staff entrance at the back — one address on the deeds, several doors built for different purposes.

Comparisons simplify, naturally — but this one holds together well enough to reason with, and reasoning is the whole point of a glossary.

Why it matters if you run a site

Subdomains organise complexity at no cost. Staging copies, client portals, APIs and regional versions each get a clean address without another registration and without another hosting account.

You do not need to work at this layer every day. You need to recognise it when it explains something, which is exactly the moment this page earns its keep.

Subdomain out in the open

An agency runs clients.agency.com for its portal and dev.agency.com for staging work, both kept apart from the marketing site at www, and all three under one domain registration.

Multiply that example by every website on the internet and you have the concept's entire job description in one go.

The Hosting Seller angle

You will meet it in the control panel and occasionally in a support conversation, usually already set the right way. If this term made sense, the natural next reads are Addon Domain, DNS, Domain Name and CNAME Record.

NVMe disks and LiteSpeed caching sit on the shelf at every price point, not behind a premium tier.

A long aisle of servers inside a global data centre network

Why we bothered with a hundred definitions

We treat unexplained jargon as a service failure. This glossary is the support desk's accumulated translations, published where a search engine can hand them out for us.

Order an annual plan and the first year of your domain registration is on the house.

  • 100+ terms, all in plain English
  • Everyday comparisons and real examples
  • Related concepts linked together
  • Written by the people on the desk

Why Hosting Seller

On every plan, as standard

Plain English first

Every term defined for people who run sites, not for other sysadmins — jargon translated rather than restated.

Pictures that stick

Each concept gets a comparison you will still remember at the moment you actually need it.

Honest about what to skip

Most terms are recognise-level rather than operate-level, and the glossary says which is which.

Linked, never siloed

Related terms cross-reference each other, so one lookup grows into a working understanding.

The stakes spelled out

Not only what it is, but when it turns out to be the answer to a problem you are having.

Grounded in real kit

Examples point at hosting you would actually use, not at an abstract diagram.

First Steps

From choosing to live

  1. 1

    Find it in your own account

    Open the control panel and find where this concept lives — seeing it attached to your own site is what turns a definition into understanding.

  2. 2

    Check what the defaults are

    Our platform ships sensible defaults for this — check rather than assume, and you will know your setup instead of hoping about it.

  3. 3

    Follow the terms next door

    Concepts travel in packs — Addon Domain, DNS and Domain Name finish this one's picture, and each is a two-minute read away.

In the Box

Packed with every plan

  • WebP image optimisation built in and costing nothing
  • LiteSpeed caching running at the server, not bolted on by plugin
  • cPanel, the panel the rest of the trade already knows
  • A domain free for year one when you order annually
  • Site migration done for you by our staff, at no charge
  • The renewal price printed on the tag matches the order price
  • Real people on the counter, every hour of every day
  • SSH, Git and Composer on the plans built for developers
  • NVMe SSD storage on every shelf, not just the top one
  • The Softaculous installer for one-click application setup

Across the Counter

The questions we get asked most

Subdomain or subdirectory for my blog section?

Subdirectory, nearly every time. A /blog path shares the main domain's standing in search, while blog. splits it in two. Subdomains earn their keep for separate applications, not for sections of the same site.

How many subdomains am I allowed?

Effectively as many as you want on our plans — they are DNS entries plus folders, not things we count and charge for. Discipline is the real limit: prune the experiments you stopped using.

What happens to my files if I leave?

The site and the files stay yours. Pull a full backup from the panel whenever you like, before or during cancellation. Domains remain registered in your name for the term you paid for and can move to any registrar once the standard 60-day window has passed.

What does round-the-clock support actually stretch to?

People at the counter at every hour, and a scope that takes in the practical work: mailbox setup, DNS records, WordPress trouble, restores. Not 'the server responds, ticket closed'. Ask us something hard before you order — the reply is a fair sample of what you would get afterwards.

How do I read the mail when I am away from the desk?

Webmail opens in any browser, and every mailbox also speaks IMAP, POP and SMTP — so the mail app on your phone, the client on your desktop and webmail all show the same messages in the same order.

Do you shift an existing site across at no charge?

We do. Open a ticket with the login details for your current host and the whole lot comes over: files, databases, mailboxes and configuration. You check the copy before DNS changes hands, and the old site keeps serving customers until the new one takes the traffic, so nobody ever sees a gap.

Can one plan hold more than a single website?

From the Pro tier upward, yes — several sites, each with its own domain, mailboxes and certificate, all under one account. If those extra sites belong to clients rather than to you, reseller hosting is the better fit: it gives each one proper separation.

Packing up and moving host? Take our checklist.

A plain running order for a move nobody notices: what to copy first, how to carry email across without dropping a single message, when to point DNS, and the two slips behind nearly every hour of downtime we get called about.

One email carrying the checklist, then the odd note on running a site well. Step off the list whenever you like — our privacy policy spells out the rest.

Whenever you're ready to order.

From a first website to a rack of servers, moving up is a change to your account rather than a migration.

See the plans