Did you know that when you buy a domain name, it’s often linked to a public record that can show who owns it, when it was registered, and when it expires?
That record is known as WHOIS. It’s a global database used to store basic information about domain names and their registration details.
In this guide, we’ll break down what exactly the WHOIS database is, how it works, and why it matters.
Key takeaways
- ☑︎ WHOIS is a public database that shows basic information about a domain name, like when it was registered and who manages it.
- ☑︎ You can use tools like who.is to look up domain details and see what’s visible.
- ☑︎ 123 Reg Domain Ownership Protection can hide or replace personal contact details in WHOIS records, helping to keep such info private.
- ☑︎ Just looking to buy a domain name? Use our domain search to check availability and register one!
What is WHOIS?
WHOIS is a public database that lets you look up information about a domain name and who owns or manages it.
It’s part of the domain name system and is overseen by ICANN (the Internet Corporation for Assigned Names and Numbers), the organisation that helps coordinate how domain names are managed around the world.
When a domain is registered, the registrar saves key details about it. Those details are then made available through WHOIS so they can be checked when needed. It’s used to see basic domain information like who manages a domain, when it was created, and when it was last updated.
Not all of this information has to be publically visible. As we’ll discuss, 123 Reg offers a clever domain privacy protection tool that can hide details and help protect domain owners.
Why was WHOIS created?
WHOIS dates back to the early days of the internet in the 1980s. It was created as a simple way for network administrators and researchers to identify who owned a domain and how to contact them.
At the time, openness was the standard approach, so registration details were publicly available by default. This helped with managing networks and resolving technical issues.
As the internet expanded, WHOIS became the standard system for checking domain ownership and registration data.
What Information does WHOIS Show?
A WHOIS lookup can return a number of different domain details, including:
☐ Registration and expiry dates
☐ Registrar name
☐ Nameserver information
☐ Contact details for the owner and technical contacts
The amount of information you see can vary. This is often due to privacy settings and rules like GDPR (a UK and EU data protection law that limits how much personal information can be shown publicly). Because of this, many WHOIS records now hide or anonymise personal contact details.
How does WHOIS work?
WHOIS works by collecting domain registration data from trusted registrars like 123 Reg — the companies that manage domain name registrations. Each registrar maintains its own database of domain records. There is no single central WHOIS database. Instead, it operates as a distributed system across multiple registrars and registries.
Data is typically updated every 24 hours, so results can sometimes be slightly out of date for recently changed domains.
How do I perform a WHOIS Lookup?
One of the most well-known options is ICANN Lookup. This is the official tool from ICANN, the organisation that oversees domain names. It gives you a clear view of a domain’s registration data and is a good choice if you want an authoritative source.
Another option is who.is. Just enter the domain and it will show key information such as registration dates, the registrar, nameservers, and any contact details that are publicly available.
You’ll notice that, in many cases, personal details are hidden or replaced due to privacy settings.
Both tools show broadly the same core information, including registration details, nameservers, and ownership data where it’s available.
How to check domain availability
If your main goal is simply to see if a domain name is available or to buy a domain, you don’t need to go through separate WHOIS tools at all.
You can just use our domain search. It checks availability instantly, so you can skip the extra steps and get straight to finding and buying a domain name that works for you.
Need help on picking a domain? Check out: How to Choose the Best Domain Ending in 2026
Why is WHOIS information public?
WHOIS records are publicly accessible for several important reasons.
Historically, the Internet Corporation for Assigned Names and Numbers (ICANN), which regulates the domain name system, required registrants’ personal details to be made publicly available. The principle was that transparency and openness were fundamental to how the internet should operate.
Today, public WHOIS data continues to support transparency around domain ownership, helps identify who manages a domain, and plays a role in security and abuse prevention.
Security researchers, law enforcement, and hosting providers all use WHOIS data to clamp down on fraud, phishing, and other malicious activity.
How do I change my WHOIS Information?
WHOIS data changes are handled through your registrar.
If you need to update the information associated with your domain, contact your registrar’s support team, who can guide you through the process and assist with updates where possible.
If you’re a customer and need help, our support team is available on 0345 450 2310.
How do I hide my WHOIS Information?
Trusted registrars like 123 Reg also offer Domain Ownership Protection, which replaces personal contact details with proxy information. This helps reduce spam, unwanted contact, and potential misuse of data.
In some cases, domain ownership details are already hidden. Due to privacy regulations such as GDPR, most personal data in WHOIS records is now masked or replaced with anonymised details.
What is Domain Ownership Protection?
Domain Ownership Protection is a 123 Reg service that hides your personal details from public WHOIS records and replaces them with protected contact information.
Rather than your name, address, and email address being publicly visible, your domain is listed with the details of a secure forwarding partner — keeping your identity private while still allowing others to contact you when necessary, such as with an offer to purchase your domain.
Beyond privacy, DOP also includes a password-protected layer to guard against unauthorised changes and help reduce spam and unwanted contact.
Ultimate Domain Protection also gives you a renewal guarantee, so if a renewal fails for any reason such as a payment issue, your domain will still be renewed automatically, protecting you from accidental loss.
123 Reg Domain Ownership Protection plans
| Full Domain Protection | Ultimate Domain Protection |
|---|---|
|
Give your online presence an extra layer of security. ✓ Domain Privacy ✓ Safeguard against hackers ✓ 2-Step Verification Approval |
Get the best level of protection available, along with peace of mind for your domain. ✓ Domain Privacy ✓ Safeguard against hackers ✓ 2-Step Verification Approval ✓ 90-Day Domain Holding Period |
| Search Domains | Search Domains |
Do I really need Domain Ownership Protection?
Domain Ownership Protection isn’t required, but many domain owners choose it for added peace of mind. It helps keep your WHOIS details private, which can be useful given growing concerns around data visibility online.
With data privacy concerns more prominent than ever, protecting your WHOIS details is not just a sensible precaution — for many, it is an essential part of owning a domain responsibly.
Ultimate Domain Protection also gives protection against your domain expiring due to a missed renewal. For online businesses, that added safety net is a key benefit.
Get a free domain name with your plan
Starting a new online business? With selected 123 Reg hosting plans, you’ll get a free domain for the 1st year. Your web address for your website and email, ready to set up when you are!
To learn more, check out: How to Get a Domain Name for Free
Wrap up
When you register a domain, WHOIS lets you check the key details behind it, like registration dates and who manages it. Not all information is always visible, but domain ownership protection can help keep your personal details private. If you’re ready, you can register a domain today and add Domain Ownership Protection for extra peace of mind.
See also: Domain Names and Trademarks – A Guide for Your Online Brand
Related articles:
- How Do I Connect My Domain to My Website?
- How to Sell Your Domain Name
- Forwarding: What is Domain Forwarding?
