Glossary Entry
What is DNS?
DNS without the jargon — the definition, the analogy, and why any site owner should care.
The short answer
The internet's lookup system is DNS, converting the names people remember into the numeric addresses and routing details machines work with.
The rest of the page opens it up — the mechanics, why a site owner should care, and one concrete example of it at work.
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
A chain of delegation carries every query: root servers first, then the servers for the extension, then your domain's authoritative nameservers, whose A, CNAME, MX and TXT records say where the website, the mail and the verifications really sit.
Each answer stays with a resolver for as long as its TTL permits, and that caching is the entirety of what people call 'propagation'. Old answers sit in caches until their timers expire.
DNS (Domain Name System), by way of an analogy
A routing table for the whole internet, answered in microseconds. Names go in, numbers come back, and every resolver keeps a local copy it refreshes only once the expiry stamp passes.
Carry that picture with you and most documentation on the topic loses its mystery on a first read.
Why it matters to a site owner
Every service attached to your domain — the site, the mail, the verification tokens — is ultimately a DNS record. Learn to read a zone file and 'the site is down' stops being a crisis and becomes a two-minute diagnosis.
That, incidentally, is the bar for any technical term — not 'could I lecture on it' but 'would I recognise it as the answer to my problem'. For this one, you now would.
One worked example
Somebody types example.com. The browser asks its resolver, the resolver walks the delegation chain down to the domain's nameservers, and the A record comes back with the hosting server's address: milliseconds, then cached ready for the next visitor.
Entirely unremarkable once you have seen it — which is the point: most hosting ideas are plain machinery behind an intimidating label.
Where it sits inside your own account
Here it largely looks after itself, since the defaults are sensible and the panel puts the controls within reach the moment you want them. Read on: Nameserver, A Record, TTL and DNS Propagation.
Hosted somewhere else already? We move the whole site at no charge, usually within 24 hours, and it goes on answering visitors throughout.
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.
Support means a person at any hour, and the remit covers the awkward practical questions other hosts hand straight back.
- 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
Tied to real hosting
Examples name platforms you would genuinely use, never an abstract diagram on a whiteboard.
Cross-wired entries
Related terms point at each other, so one lookup compounds into working knowledge.
Analogies that hold
Every concept comes with a mental model that returns exactly when you need it.
This term, properly landed
DNS defined, pictured by analogy and located in your own panel — recognise-level after a single read.
Stakes made explicit
More than what a thing is: the moments it turns out to be the answer to a problem you have.
Clear about how deep to go
Most of these are recognise-level rather than operate-level, and every entry says which it is.
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
Look at how your account has it configured. Nine times in ten the default is right, and a check turns the guess into certainty.
- 3
Chase the neighbouring terms
Hosting terms travel in groups — Nameserver, A Record and TTL finish this one's picture, each a two-minute read away.
Built In
Fitted to every plan
- Your existing site brought across by our engineers, at no charge
- Upgrades applied in place, with no migration when you change plan
- No set-up charge at any point, and no joining fee
- WordPress and 400+ further applications installed in one click
- Money back within 30 days on hosting plans, 7 on reseller
- LiteSpeed caching in the server itself rather than bolted on by plugin
- Mailboxes that answer at the name you hold
- Spam and virus screening on every mailbox by default
- Softaculous included for one-click application installs
- A renewal figure identical to the one you registered at
Frequently Asked
The questions that come up most
Who is answering my DNS queries?
Whichever nameservers the registrar has delegated to, usually the host, which is what happens here by default once a domain points at us, or a dedicated DNS provider. Nothing settles the question but the delegation recorded at the registrar.
Can DNS alone take a site offline?
It was built to prevent exactly that, with several nameservers, caching around the world and TTLs holding answers alive. Where it is fragile is human: mistyped records, broken delegations and forgotten entries explain nearly every so-called DNS outage.
Is there a safe place to try changes?
Yes — plans with staging let you copy the live site, work on the copy, then publish it once it behaves. That turns 'hope the update works' into 'know it works' before a single customer meets it.
Can I transfer in a name I already own?
Yes, and it is routine. Unlock the name at your current registrar, take the auth code, and start the transfer from your client area. Whatever registration time remains carries over, and DNS keeps resolving the whole way through.
Keep reading
DNS Propagation
What people call DNS propagation is the window after a record change while stale cached answers expire, one…
Nameserver
The machines authorised to answer DNS queries for your domain are its nameservers, and whoever operates the…
How to Register a Domain Name
The way it is really done, in order, with the usual mistake pointed out.
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