Quick summary
- What it is: WHOIS is a query and response protocol used to query databases that store information about the owners of domain names and IP addresses.
- What it's for: helps connect the domain with the website, email and other associated services.
- When to check it: when changing DNS servers, connecting a domain, configuring email or reviewing propagation.
WHOIS is a query and response protocol used to query databases that store information about the owners of domain names and IP addresses. When you perform a WHOIS query, you obtain public information about the registration of that domain.
How WHOIS works
- Information query: A request is sent to a WHOIS server containing the information about the domain or IP in question.
- Server response: The server returns detailed information about the owner, dates, nameservers and domain status.
- Public access: WHOIS information is generally in the public domain and available for anyone to query.
Information that WHOIS provides
- Registrant name: The registered owner of the domain (may be hidden with WHOIS privacy protection).
- Contact details: Email, phone and address of the registrant, administrative and technical contact.
- Important dates: Domain registration date, expiry date and last updates.
- Nameservers: List of nameservers associated with the domain.
- Domain status: Whether it is locked, active, pending deletion, etc.
Uses of WHOIS
- Ownership verification: Check who owns a domain and obtain their contact details.
- Security investigations: Identify domain owners linked to malicious activities such as phishing or spam.
- Domain purchasing: See whether a domain is available or find out when it expires to attempt to register it.
When will you come across this term?
WHOIS appears when you need to verify the status of a domain, check expiry dates or investigate domain ownership. You will also see it mentioned in articles about domain management and in domain availability search tools.
Why it matters in hosting
Understanding this concept will help you make better decisions when managing your service. In practice, it relates to the connection between the domain, the website, email and other associated services. If it appears in a guide, the control panel or a support response, review the context before making changes.
Related articles
- Domain
- DNS
- Nameservers
- A Record
- CNAME Record