Table of Contents
WHOIS
WHOIS is a query service used to obtain registration information about Internet resources such as:
- Domain names
- IP address blocks
- Autonomous System Numbers (ASNs)
WHOIS helps identify who is responsible for a domain or network resource and provides administrative information about its registration.
What Can WHOIS Show?
A WHOIS lookup may include information such as:
- Domain name
- Registrar
- Registration date
- Expiration date
- Last update date
- Domain status
- Name servers
- Registrant information (when public)
The exact information depends on the registry and privacy settings.
Example
A WHOIS lookup for:
example.com
might return:
Registrar: Example Registrar Inc. Created: 1995-08-14 Expires: 2027-08-13 Nameservers: ns1.example.com ns2.example.com
Domain Registrar
A registrar is the company through which a domain name is registered.
Examples include:
- GoDaddy
- Namecheap
- Tucows
- Gandi
The registrar is responsible for managing the domain registration.
Name Servers
WHOIS usually lists the authoritative name servers.
Example:
ns1.example.com ns2.example.com
These servers host the domain's DNS records.
Registration Dates
WHOIS commonly reports three important dates.
Creation Date
When the domain was first registered.
Expiration Date
When the current registration period ends.
Updated Date
The last time registration information was modified.
Domain Status
WHOIS may report one or more status values.
Examples:
- clientTransferProhibited
- clientDeleteProhibited
- clientUpdateProhibited
These statuses help protect domains from unauthorized changes.
Privacy Protection
Many domain owners enable WHOIS Privacy.
Instead of showing personal information, WHOIS displays the contact details of a privacy service.
Example:
Registrant: REDACTED FOR PRIVACY
This helps reduce spam and protect personal information.
WHOIS for IP Addresses
WHOIS can also be used for IP addresses.
Example:
8.8.8.8
may return:
- Organization
- Regional Internet Registry (RIR)
- Country
- Network range
- ASN
This information identifies the organization responsible for the IP address.
Regional Internet Registries
IP address registrations are managed by Regional Internet Registries (RIRs).
These include:
- ARIN (North America)
- RIPE NCC (Europe, Middle East, and parts of Central Asia)
- APNIC (Asia-Pacific)
- AFRINIC (Africa)
- LACNIC (Latin America and Caribbean)
WHOIS vs DNS
WHOIS and DNS provide different types of information.
| WHOIS | DNS |
|---|---|
| Registration information | Technical records |
| Registrar | A, AAAA, MX, TXT, etc. |
| Creation date | IP addresses |
| Expiration date | Mail servers |
| Domain status | Name servers |
WHOIS tells you who registered the domain, while DNS tells you how the domain works.
WHOIS and Telenegar
The Telenegar WHOIS Lookup service can display information such as:
- Registrar
- Registration dates
- Domain status
- Name servers
- WHOIS server
- Registrant information (when available)
This information is useful for:
- Domain investigations
- Security analysis
- Troubleshooting
- Domain management
Common Misconceptions
- WHOIS shows the current website owner.
- Not always. Many domains use privacy protection or organizational registrations.
- WHOIS and DNS contain the same information.
- False. They serve different purposes.
- Every domain reveals personal information.
- False. Many registrations are protected by privacy services or registry policies.
Related Topics
whois domains registrar dns diagnostics