WHOIS, RDAP and DNS domain research
Start a WHOIS lookup and choose the registration, DNS, IP or website evidence that matches the question.
Direct answer: Browse every canonical WhoisRequest.org tool, guide, research method and policy page, grouped by the question or evidence layer it supports.
Start with the domain and network tool directory when you have a technical query, use the research learning hub when you need interpretation, and review the source-aware lookup methodology before making a consequential conclusion.
Start and explore
Choose a research path, browse the complete tool catalogue or learn how the evidence layers fit together.
Domain and network research tools
Browse every working lookup and diagnostic tool by registration, infrastructure and website evidence layer.
WHOIS, RDAP and DNS research guides
Browse practical guides for reading registration records, status codes, DNS delegation and lifecycle events.
Registration records
Query the systems that describe who operates a domain and where the record comes from.
WHOIS Lookup
Look up a domain's registry or registrar WHOIS response, including referrals, raw registration data, source and query time.
RDAP Lookup
Look up structured domain or IP registration data with typed events, entity roles, notices, status codes and source links.
IP WHOIS Lookup
Inspect the registered range, country, status, events, notices and raw RDAP response published for an IP address.
Domain Availability Check
Combine DNS and registration evidence without pretending that a lookup can guarantee purchase availability.
DNS and infrastructure
Follow the delegation and network evidence that connects a name to internet services.
DNS Lookup
Look up A, AAAA, MX, NS, TXT, CAA and SOA records with response meaning, observed values, TTLs and query time preserved.
DNS Report
Review seven DNS record families and flag missing address, mail, nameserver and authority evidence from this resolver.
DNSSEC Check
Compare the parent DS records with the domain's published DNSKEY set and report whether a cryptographic key match is visible.
Nameserver Lookup
Look up a domain's published NS records, then resolve the IPv4 and IPv6 addresses currently used by each authoritative nameserver.
Reverse DNS Lookup
Run a reverse DNS lookup for a public IPv4 or IPv6 address to find its published PTR hostname and aliases, with source and query time.
IP to ASN Lookup
Map a public IPv4 or IPv6 address to the ASN, organization, ISP and network context reported by the lookup source.
Website checks
Test observable website behavior with narrowly scoped, abuse-resistant diagnostics.
Website Uptime Check
Check one public URL's HTTP status, redirect location, server header and total response time from this probe.
SSL Certificate Check
Inspect a public host's TLS certificate subject, issuer, covered names, validity dates and negotiated cipher without treating encryption as identity proof.
HTTP Headers Check
Inspect HTTP response headers, caching directives and browser security policies such as CSP and HSTS without executing page scripts.
IDN and Punycode Converter
Convert an internationalized domain between Unicode and ASCII, then compare the exact hostname used by DNS and certificates.
Registration and network learning guides
Use these guides to interpret results, handle edge cases and choose a responsible next step.
What Is WHOIS? Records, Referrals and Practical Limits
Understand what a WHOIS response can establish, where the data comes from, and why privacy redaction changed domain research.
WHOIS vs RDAP: A Field-by-Field Decision Guide
Compare WHOIS and RDAP outputs, transport, status handling, referrals, redaction notices, and automation reliability.
How to Read Domain Status Codes Without Guessing
Translate EPP domain status codes into specific operational consequences for updates, transfers, renewal, and deletion.
Domain Expiration Timeline: Renewal, Redemption and Deletion
Separate registrar expiry, registry auto-renew, grace periods, redemption, pending delete, and eventual availability.
WHOIS Privacy and Redaction: What Missing Data Means
Understand proxy registration, privacy services, redacted fields, disclosure paths, and responsible use of registration data.
How RDAP Bootstrap Finds the Right Server
Learn how IANA bootstrap data routes domain, IP and ASN queries to the correct authoritative RDAP service without guesswork.
DNS Delegation Explained: Parent, Child and Glue Records
Follow a delegation from the root to a TLD and authoritative nameserver, including glue and lame delegation failures.
DNS Records Reference With Real Diagnostic Questions
Use A, AAAA, CNAME, MX, TXT, NS, SOA, CAA and PTR records to answer specific website, email, authority and routing questions.
Nameserver Migration Checklist With Rollback Signals
Move authoritative DNS providers using inventory, lowered TTLs, parallel zones, DNSSEC checks, and measured rollback criteria.
Domain Transfer Checklist: Evidence Before Action
Prepare a domain transfer by validating contacts, status codes, authorization, DNS independence, and renewal timing.
Research methods and references
These pages cover historical research, monitoring, registrar verification, lifecycle events, common questions and API use.
WHOIS, RDAP and DNS FAQ
Read direct answers about registration data, DNS, certificates, availability and lookup limitations.
Domain history research
Build a dated domain timeline without overstating incomplete registration, DNS, certificate or web archives.
Website monitoring methodology
Separate DNS, connection, TLS, HTTP and content observations in a repeatable monitoring plan.
Find and verify a domain registrar
Identify the sponsoring registrar without confusing it with a reseller, DNS provider or web host.
Domain registration events and dates
Interpret creation, update, expiration, transfer, redemption and deletion events in context.
WHOIS, RDAP and DNS lookup API documentation
Use the read-only JSON endpoints with the correct tool identifiers, inputs, responses and error handling.
About, standards and policies
Review who maintains the site, how evidence is collected, how corrections work and which use and privacy rules apply.
About WhoisRequest.org
Learn how WhoisRequest.org builds source-aware WHOIS, RDAP, DNS and network tools, reviews guidance, and separates observations from claims.
Lookup Methodology
See how WhoisRequest.org validates inputs, selects WHOIS, RDAP, DNS and HTTP sources, limits requests, records time and states uncertainty.
Editorial and Corrections Policy
Read the sourcing, originality, automation, correction and review standards used for WhoisRequest.org tools, guides and research articles.
Privacy Policy
Learn what WhoisRequest.org processes when you use its public domain and network lookup tools, and how to submit a privacy concern.
Terms of Use
Review the responsible-use conditions, result limitations, safety restrictions, and disclosure expectations for WhoisRequest.org tools.
Contact WhoisRequest.org
Contact WhoisRequest.org to report a factual correction, security vulnerability, privacy concern or reproducible problem with a lookup tool.
Published research reports
Time-specific reports that passed the site's editorial and automated publishing controls.
Domain research reports
Browse published investigations and evidence-based domain research reports.
How WHOIS Referrals Find the Authoritative Server
A referral tells a client which registry or registrar service may hold the next part of the record.
Why a WHOIS Record Shows More Than One Date
WHOIS dates can mark creation, registry expiry, registrar renewal, or the last record update. Read the label before the value.
What a WHOIS Lookup Can and Cannot Tell You
A WHOIS lookup can show registration data, the sponsoring registrar, status values, dates, and the service that answered.