Whois / RDAP Lookup
Free, no signup. Registry data, without old WHOIS parsing: registrar, dates, nameservers, domain locks, and clear privacy-redaction context.
Checks run from our server; we fetch the URL you enter and don't keep the results. This queries IANA's RDAP bootstrap and the relevant registry. Results may be cached for up to 24 hours; registry privacy policies can redact contacts. Anonymous run-level outcome counters may be used for aggregate research; URLs, domains, IPs, and identifiers are never included, and no statistic is released below 100 runs.
Sample report
Illustrative example — documentation-domain fixture
- Created: 1995-08-14
- Registrar: published by registry response
- Registrant: redacted by registry privacy policy
- Nameservers: observed RDAP values
- Status: clientTransferProhibited — transfer is locked at the registrar
Dates and parties in a real report are displayed only when the registry publishes them; missing values remain “Not published.”
How to use it
- Enter a root domain and choose Look up domain.
- Review registry dates and registrar separately from registrant contact data.
- Read each EPP status explanation and confirm actionable locks in the registrar account.
- Use the DNS handoff when nameserver publication needs a resolver-level check.
Site passport Local context for this saved site
Local data
Saved targets, named lists, and recent check summaries remain only in this browser.
Registration
Parties
Nameservers
Domain status
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How to read the result
Registration dates are normalized registry events. Parties are registry-published roles and may be redacted. Nameservers are RDAP registration data, not a live DNS resolution test. Statuses are EPP codes with plain explanations, not independent diagnoses.
Data sources & freshness
The endpoint normalizes the domain, follows IANA’s RDAP bootstrap to the responsible registry service, and returns structured events, entities, nameservers, and statuses. The browser formats dates, calculates days to published expiry, and explains supported EPP status codes. Responses may be cached for 24 hours.
Features
- Structured registrar, date, nameserver, and status fields.
- Privacy-redaction context instead of blank-owner assumptions.
- Plain-language EPP status explanations.
- Prefilled handoff to DNS Checker.
Limitations
Some ccTLDs lack complete RDAP service, registries redact data, and published dates or parties can be absent. The tool does not bypass privacy, guarantee deletion timing, manage renewals, or replace the registrar account. Cached dataCaching stores a copy of a page or resource — in a browser, a CDN edge node, or a search crawler's own cache — so it can be served again without regenerating or re-downloading it. It isn't a direct ranking factor, but it feeds page speed and crawl efficiency. may lag a recent change.
Frequently asked questions
Why is registrant information missing?
Many registries redact registrant data under privacy policy or GDPR. Missing data is not proof the domain has no registrant.
Is this WHOIS?
It provides the same practical lookup information via RDAP, the structured successor to traditional WHOIS. Some ccTLD registries do not yet publish RDAP data.
What do clientTransferProhibited and other domain statuses mean?
They are EPP status codes published by the registry. The report explains common locks and holds, but your registrar is the authority for why a status is set and how to change it.
Is the expiry date a guarantee that the domain will be deleted then?
No. Expiry, grace, redemption, auction, and deletion policies vary by registrar and registry. Treat the published date as an operational reminder and confirm renewal in the registrar account.
Feature requests for Whois Lookup
Upvote what you want most. New ideas can be submitted from the floating Feedback menu; requests appear here once approved, and the most-wanted rise to the top.
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ツールについて
RDAPを使って、登録業者、登録日と有効期限、ネームサーバー、EPPドメインロック状態、プライバシーで編集された登録者情報を確認します。
機能
- 登録業者と登録日・期限
- ネームサーバーとEPPロック状態
- RDAPレスポンスの出典
- プライバシー編集済み情報の明示
仕組み
ドメインとTLDを確認してRDAPエンドポイントへ問い合わせ、登録業者、日付、ネームサーバー、ロック、編集情報を項目別に整理します。
制限事項
- RDAPで公開された範囲だけを表示し、非公開の登録者情報、所有権、更新の反映、法的状態を推測しません。
- レジストリ、地域、TLD、プライバシー設定で回答項目が異なる場合があります。
よくある質問
WHOISの完全な情報を表示しますか?
いいえ。RDAPで公開された情報だけを表示します。プライバシー編集やレジストリの制限を尊重します。
ドメイン所有者を確認できますか?
公開されている場合に限り登録者情報を表示します。編集された情報から所有権を推測しません。
ドメインが安全だと保証しますか?
いいえ。登録情報と状態の確認であり、セキュリティ、評判、法的権利の保証ではありません。