Glossary Entry
What is Subdomain?
What Subdomain actually means, buzzwords removed — with the example that makes it land.
The short answer
A subdomain is a named branch of your domain — blog.example.com, shop.example.com — and each can hold its own content or run a separate application.
What follows: the longer explanation, a picture that holds, the practical stakes, and the places you will genuinely meet it.
By the Hosting & Domains team · Reviewed 18 August 2026
100+
Terms in the jargon buster
2 min
Average read time
Plain
English throughout
24/7
People, if you get stuck
Technically it is a DNS entry beneath your domain, aimed wherever you like and backed by a folder of its own on the hosting side. Creating one is free and immediate, with nothing to register beyond the parent name you already hold.
Search engines treat a subdomain as semi-separate property, which is why sections of a site usually belong in a subdirectory such as /journal, while genuinely different applications — app., portal. — sit comfortably on subdomains.
A way to picture Subdomain
Terminals inside one airport. Departures, arrivals, cargo: a single facility on the map with several entrances built for different traffic, and no need for a second airport for any of them.
Any analogy flattens the detail, naturally — but this one is solid enough to think with, and thinking is what a jargon buster is for.
Why it matters to a site owner
Subdomains give you structure at no cost. Staging sites, client portals, APIs and regional editions each get a clean address with no extra registration and no second hosting account.
Nobody expects you to work at this layer daily. The aim is recognising it when it explains something — and that moment is exactly when this page pays for itself.
Subdomain out in the open
An agency runs clients.agency.com as its portal and dev.agency.com for staging, both kept away from the marketing site on www: three surfaces from one registration.
Scale that example across every website online and you have described the whole job of the concept in one stroke.
How Hosting & Domains deals with it
You will meet it in the control panel and now and then in a support thread, usually already set correctly. If this one landed, the natural follow-ups are Addon Domain, DNS, Domain Name and CNAME Record.
NVMe storage and LiteSpeed caching sit under every tier, the smallest plan included — that is the floor here, not an upgrade.
Why a hundred definitions were worth the writing
An unexplained piece of jargon is, to us, a service defect. This is the support team's collected translations, published where a search engine can hand them over on our behalf.
The rate you register at is the rate you renew at, so year two costs precisely what year one did — nothing lying in wait on the invoice.
- 100+ entries, plain English all the way
- Ordinary analogies, working examples
- Neighbouring ideas linked together
- Written by our own support engineers
Why Hosting & Domains
Standard on every plan
Jargon-free by design
Definitions written for people who run sites, not for other sysadmins — translation rather than restatement.
Analogies that hold
Every concept comes with a mental model that returns exactly when you need it.
Clear about how deep to go
Most of these are recognise-level rather than operate-level, and every entry says which it is.
Cross-wired entries
Related terms point at each other, so one lookup compounds into working knowledge.
Stakes made explicit
More than what a thing is: the moments it turns out to be the answer to a problem you have.
Tied to real hosting
Examples name platforms you would genuinely use, never an abstract diagram on a whiteboard.
Quick Start
Order placed to site online
- 1
Find it in your own account
Open the control panel and find where this idea sits — a definition turns into understanding the moment it attaches to your own site.
- 2
Check the defaults as they stand
The platform ships sensible defaults for this — check rather than assume, and your setup becomes something you know instead of hope.
- 3
Chase the neighbouring terms
Hosting terms travel in groups — Addon Domain, DNS and Domain Name finish this one's picture, each a two-minute read away.
Built In
Fitted to every plan
- 99.9% uptime as the target, watched around the clock
- Spam and virus screening on every mailbox by default
- Webmail in the browser plus IMAP, POP and SMTP for any client
- WebP image optimisation built in, at no extra charge
- NVMe SSD storage on every tier, not only the dear ones
- cPanel, which is what most of the industry already runs
- WordPress and 400+ further applications installed in one click
- Your existing site brought across by our engineers, at no charge
- The name's first year included when you order annually
- A daily copy, with restores you run yourself from the panel
Frequently Asked
The questions that come up most
Should a blog sit on a subdomain or in a subdirectory?
A subdirectory, in nearly every case. A /journal path builds authority into the main domain, whereas blog. divides it between two. Subdomains earn their place for separate applications rather than sections of the same site.
How many subdomains may I have?
On our plans, effectively as many as you like, since they are DNS records plus folders rather than billable items. Self-discipline is the only genuine limit, so remove the experiments once they have served their purpose.
If I cancel, what becomes of my site and files?
They remain yours. Download a full copy from the panel whenever you like, before or during cancellation. Names stay 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 cover?
A reply from a person at any hour, covering the practical jobs: setting up a mailbox, a DNS record, a WordPress fault, a restore. Not 'server is up, closing ticket'. Put a hard question to us before you buy — the answer is a fair sample of what follows.
Keep reading
Addon Domain
An addon domain is a second, entirely separate website served from the same account, with its own name and …
CNAME Record
A CNAME makes one hostname an alias of another, so the name arrives wherever its target currently points.
How to Create a Subdomain
Step by step, with every snag flagged before you get to it.
Web Hosting
cPanel hosting on NVMe drives — SSL, the migration and year one of the name all included.
WordPress Hosting
WordPress looked after for you — LiteSpeed caching, staging copies and a daily backup.
Changing hosts? Run through our checklist first.
A plain order of work for a move nobody visiting will notice: which files go over first, how to carry the mail across without losing a message, when exactly to repoint DNS, and the two mistakes behind nearly every outage we are asked to rescue.
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