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WHOIS Lookup — Check Domain Registration, Ownership & Expiry Instantly

By sadiqbd · June 6, 2026

WHOIS Lookup — Check Domain Registration, Ownership & Expiry Instantly

Every domain has an owner — WHOIS tells you who

A domain name is a registered asset. Somewhere behind every website, every email address, every DNS zone, there's an entity that paid for the right to use that name. WHOIS is the public record that reveals who that entity is — or, increasingly, how hard they've tried to stay anonymous.

A WHOIS lookup queries the registration database for a domain or IP address and returns whatever the registrant has chosen to make public: ownership details, registration dates, nameservers, and contact information.

What WHOIS Is

WHOIS is both a protocol and a database system. When a domain is registered, the registrar is required to collect and publish certain information about the registrant in the global WHOIS system — a distributed network of databases maintained by registrars, registries (the organisations that manage TLDs like .com, .net, .org), and ARIN/APNIC/RIPE (for IP address data).

A WHOIS query retrieves:

  • Registrant information — name, organisation, email, phone, address (often redacted for privacy)
  • Registrar — which company the domain is registered through
  • Registration date — when the domain was first registered
  • Expiry date — when the registration expires
  • Last updated — when the record was last modified
  • Nameservers — the DNS servers currently delegated for the domain
  • Domain status — whether the domain is active, locked, or pending deletion

WHOIS Privacy and GDPR

Until 2018, WHOIS was a treasure trove of personal information. Then GDPR changed everything. European registrars began redacting personal data from public WHOIS records for individual registrants — a trend that quickly spread globally as other registrars adopted similar policies.

Today, most WHOIS lookups for personally registered domains show something like:

Registrant Name: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar
Registrant Phone: REDACTED FOR PRIVACY

ICANN (the Internet Corporation for Assigned Names and Numbers) has been working on a standardised system called RDAP (Registration Data Access Protocol) that provides structured data and allows accredited parties (like law enforcement and cybersecurity researchers) to request full registration data through gated access.

Business domains registered with organisation details rather than personal information are more likely to have visible registrant data — since GDPR primarily protects natural persons.

How to Use the WHOIS Lookup on sadiqbd.com

  1. Enter the domain name — e.g. example.com or a bare TLD like google.com
  2. Run the lookup — the tool queries the appropriate WHOIS server for that TLD
  3. Read the results — registration details, dates, registrar, nameservers, and status codes

For IP address WHOIS, enter the IP directly — the tool queries the appropriate Regional Internet Registry (ARIN for North America, APNIC for Asia-Pacific, RIPE for Europe, etc.).

Real-World Examples

Checking if a domain is available

Before building a brand around a name, you want to know if a domain is registered. WHOIS lookup for yourtargetdomain.com:

No WHOIS record / "Domain not found" → the domain is available for registration.

Record found with expiry date in the past → the domain has expired and may be available for registration or in a redemption grace period.

Record found, active → the domain is taken. Check nameservers and creation date to understand if it's actively used or parked.

Finding the registrar of a domain you own

You've lost the login for a domain you registered years ago. WHOIS reveals the registrar name:

Registrar: Namecheap, Inc.
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: https://www.namecheap.com

Now you know where to go to recover access — Namecheap's account recovery process.

Verifying a domain's expiry date

A domain you depend on is approaching renewal. WHOIS confirms the exact expiry:

Registry Expiry Date: 2025-03-15T00:00:00Z

The domain expires March 15, 2025. Set a reminder and ensure the registrar has a valid payment method — many registrars auto-renew but require card details to be current.

Investigating a suspicious email sender

You receive a phishing attempt from support@secure-banking-update.com. WHOIS lookup:

Creation Date: 2024-06-08T14:23:00Z
Registry Expiry Date: 2025-06-08T14:23:00Z

The domain was registered 3 days before the phishing email arrived. Freshly registered domains used in phishing campaigns are a classic indicator of fraud. Combined with the suspicious domain name, this is clear evidence of a scam.

Checking who owns an IP address

Your server is receiving a flood of requests from 198.51.100.45. IP WHOIS lookup:

OrgName: Example Hosting Ltd
Country: CN
NetRange: 198.51.100.0 - 198.51.100.255

The IP belongs to a hosting provider in China — consistent with a botnet or server-based attack. Block the IP range and report to the abuse contact listed in the WHOIS record.

Competitive research

You want to know when a competitor's domain was registered — to gauge how established they are.

Creation Date: 2012-04-22T09:14:12Z

12-year-old domain. A well-established company. Their domain age also contributes to their SEO strength.

Domain Status Codes

WHOIS records include status codes that indicate the domain's current state:

Status Code Meaning
clientTransferProhibited Domain cannot be transferred to another registrar without removing this lock
clientDeleteProhibited Domain cannot be deleted by registrar
clientUpdateProhibited Domain details cannot be changed without removing this lock
serverTransferProhibited Registry-level transfer lock (stronger than client-level)
pendingDelete Domain has expired and is in deletion queue
redemptionPeriod Domain has expired; registrant can redeem for a fee
active / ok Domain is active with no restrictions

clientTransferProhibited is normal and healthy — most well-managed domains have this status, preventing unauthorised transfers. All major registrars enable this by default.

If you're trying to transfer a domain and it shows clientTransferProhibited, you need to log into the registrar and disable the transfer lock before initiating the transfer.

WHOIS for IP Addresses

IP address WHOIS reveals who owns an IP block and provides abuse contacts. Useful for:

  • Security investigations — who's attacking you?
  • Geolocation context — which country/organisation controls this IP?
  • Reporting abuse — the OrgAbuseEmail field gives the address to report spam, DDoS, or other abuse to the IP's owner

Key fields in IP WHOIS:

NetRange: 203.0.113.0 - 203.0.113.255
CIDR: 203.0.113.0/24
OrgName: Example ISP Ltd
Country: BD
OrgAbuseEmail: abuse@example-isp.bd

Reporting abuse to OrgAbuseEmail is the correct channel — it goes to the network owner's security team, not a generic support mailbox.

What WHOIS Doesn't Tell You

Whether the website is legitimate. A well-established registrant with years of registration history can still run a scam site. WHOIS is one signal among many.

The actual person behind a privacy-protected domain. Privacy protection services replace personal details with the registrar's own contact information. The real registrant's data is held by the registrar and only disclosed through legal processes.

Website content or hosting details. WHOIS covers domain registration and nameservers. For hosting information, combine WHOIS with a DNS lookup (to find the IP) and then an IP WHOIS lookup (to identify the hosting provider).

Accuracy. Registrants are supposed to provide accurate information, but WHOIS data isn't always verified. Fake registrant details are common in domains used for spam or phishing.

Tips for Using WHOIS

Check expiry dates for domains you depend on. If you use a third-party domain for an integration, API, or critical service, check its WHOIS expiry periodically. A domain expiring and being picked up by a squatter or bad actor could redirect traffic to a malicious site.

Look at creation date for trust signals. A domain registered last week claiming to be a major bank is a strong phishing indicator. Long registration history doesn't guarantee legitimacy, but very recent registration for a "trusted" brand is a red flag.

Use WHOIS to find the registrar for domain recovery. If you've lost access to a domain, the registrar contact in WHOIS is your starting point for recovery.

For SEO due diligence, check domain history. Old domains with clean history are worth more than newly registered ones. WHOIS creation date + historical records (from tools like archive.org) paint a picture of a domain's background.

Frequently Asked Questions

Why is the registrant information redacted? GDPR and equivalent privacy regulations require registrars to protect personal data of individual registrants. Most registrars now use privacy protection by default. Business registrations may still show organisation details.

Can I find who owns a domain even if it's privacy-protected? Not through public WHOIS. Registered abuse and legal channels exist — the registrar holds the real contact information and will disclose it under valid legal request. ICANN's RDAP system provides a structured pathway for accredited parties.

Does WHOIS show if a domain is expiring soon? Yes — the Registry Expiry Date field shows the exact expiry. If you're checking a domain to register after it expires, note that domains typically go through a grace period (30–45 days) and redemption period (30 days) after expiry before becoming publicly available.

What's the difference between a registrar and a registry? A registry manages a top-level domain (Verisign manages .com; BTCL manages .bd). A registrar is accredited to sell domain registrations (GoDaddy, Namecheap, Cloudflare). You register through a registrar; the registry maintains the authoritative database.

Is the WHOIS lookup tool free? Yes — completely free, no sign-up required.

WHOIS is one of those research tools that delivers a surprising amount of context from a single query — registration age, who's behind a domain, what registrar to contact, and whether a domain is protected or exposed. The lookup tool makes this information instantly accessible.

Try the WHOIS Lookup free at sadiqbd.com — check any domain or IP's registration details instantly.

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