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HomeNetworkingWHOIS & RDAP Explainer

Example: WHOIS & RDAP Explainer

A worked example, rendered from real sample data. Sign in to run the tool on your own input.

Input
example.com
Output
═══ What this tool did ═══
ℹ No WHOIS or RDAP query was sent. This page runs offline and makes no outbound network calls.
ℹ It builds the exact WHOIS/RDAP commands to run and explains what each field will mean.

═══ Domain ═══
Name: example.com
TLD: .com
Registrable guess: example.com
Registry WHOIS server: whois.verisign-grs.com

═══ Commands to run ═══
  whois example.com
  whois -h whois.verisign-grs.com example.com        ask the registry directly (thin answer for .com/.net)
  curl -s https://rdap.org/domain/example.com | jq .   RDAP, the structured JSON successor to WHOIS
  curl -s https://rdap.org/domain/example.com | jq -r '.events[] | "\(.eventAction): \(.eventDate)"'
  dig example.com NS +short                         who actually serves the zone right now
  dig example.com SOA +short                        the zone's own idea of its primary server
ℹ RDAP is authoritative and rate-limited far less aggressively than port-43 WHOIS. Prefer it in scripts.

═══ What the answer will contain ═══
• Registrar and Registry Domain ID — who the domain is managed through.
• Creation / Updated / Registry Expiry Date — the only reliable age signals.
• Domain Status — EPP codes such as clientTransferProhibited; paste the response back here to decode them.
• Name Server lines — compare these with `dig NS` to spot delegation drift.
• Registrant fields — usually REDACTED FOR PRIVACY since GDPR.
• DNSSEC — signedDelegation or unsigned.
ℹ Paste the whole response back into this box and every field, date and status code above will be decoded.

About WHOIS & RDAP Explainer

WHOIS & RDAP Explainer preview - Networking tool

Build whois/RDAP commands and decode a pasted WHOIS response — dates, EPP status codes, nameservers and redactions (no registry is queried). Part of the DevTools Surf developer suite. Browse more tools in the Networking collection.

Use Cases

  • Identify the owner and registrar of a domain before a business negotiation or acquisition.
  • Verify domain registration age and expiry to assess a domain's legitimacy.
  • Find abuse contacts for a domain sending spam or hosting phishing pages.
  • Check nameservers to identify the CDN or hosting provider used by a competitor or target domain.

Tips

  • Check WHOIS for domain creation date — domain registered within the past 6 months is a red flag for phishing or spam domains, which are frequently cycled.
  • RDAP (Registration Data Access Protocol), which replaced WHOIS in 2016 for most TLDs, returns structured JSON — useful for programmatic domain intelligence.
  • Privacy protection (WHOIS guard) masks registrant details but the registrar and nameservers are still visible — nameserver patterns often reveal the hosting provider or CDN.

Fun Facts

  • WHOIS (not an acronym — pronounced 'who is') was created by Elizabeth Feinler and the Network Information Center (NIC) team at Stanford Research Institute in the late 1970s as a simple text lookup protocol.
  • The GDPR (2018) dramatically changed WHOIS availability — registrars in the EU began redacting personal information from public WHOIS records, making domain owner identification significantly harder for all registrars worldwide.
  • ICANN's RDAP (Registration Data Access Protocol) was mandated to replace WHOIS for all ICANN-accredited registrars by August 2023, offering structured data, HTTPS authentication, and access tiering — features that WHOIS's 1980s-era design could not support.

FAQ

Why is WHOIS showing privacy-protected information?
Domain privacy services replace registrant contact info with the service's contact details. This is legal and widely available from all major registrars. Law enforcement can request unmasked data through the registrar via formal legal process.
Can I find out who owns a privacy-protected domain?
Not through public WHOIS. Options include: contacting the registrar's abuse team if the domain is involved in illegal activity, using trademark/legal channels through ICANN's UDRP process, or social engineering (less reliable).

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