Domain Age Checker
Check the age, registration date, registrar, nameservers, and expiration of any domain using the public RDAP registry — no API key required.
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About Domain Age Checker
Validate data free online with Domain Age Checker. Browser-based, no signup, no installation — instant results for security teams.
Domain Age Checker tells you when a domain was first registered, how long it has been live, who the current registrar is, when it will expire, and which nameservers it points to — using the public RDAP registry. Type a domain like example.com and the tool returns structured data within a second, with no signup, no API key, and no rate-limit gate. Domain age matters for several practical reasons. SEO specialists use it as one of several trust signals — older, continuously-registered domains often correlate with stronger search performance because they have had more time to accumulate backlinks, brand mentions, and verified content. Security teams use it during vendor or phishing-link triage: a domain registered in the last 30 days that asks for credentials is almost always a red flag. Acquisitions and M&A teams use age as part of brand-asset valuation. Affiliate marketers use it to filter expired-domain auction lists for properties with usable history. The tool uses RDAP (Registration Data Access Protocol), which is the modern, structured JSON replacement for legacy WHOIS. RDAP returns standardized fields for the registration event, the last-update event, and the expiration event, plus the registrar contact and nameserver records. Most generic top-level domains (.com, .net, .org, .io, .dev, .app, .ai, .co, .me and many more) expose this data freely. Some country-code TLDs do not publish registration dates publicly — in that case the lookup will succeed but the age field may be missing. Unlike many "free" domain-age tools, this one calls the registry directly from your browser. There is no intermediate scraping server, no captcha, and no usage cap. The same RDAP endpoint that ICANN and registry operators use is the source of truth for the answer you see. If a domain is unregistered, parked at a registrar that withholds public data, or sits under a TLD without RDAP support, the tool will say so explicitly instead of returning a misleading "unknown" value. For deeper post-lookup work — checking who currently runs the site, what nameservers it uses, and whether the SSL certificate is valid — pair this with our SSL Checker and DNS Lookup tools.
Key features
- Real registry data via RDAP. Pulls the registration event directly from the public RDAP service used by ICANN and TLD registries — no scraping, no caching, no third-party API key.
- Age in years and days. Calculates the precise age from the first registration event date. Surface 'years + days' so the result is meaningful for SEO and trust assessments.
- Registrar, expiration & nameservers. Returns the current registrar, expiration date, status codes, and nameserver records — everything you need to triage a domain in one view.
- No signup, no rate limit. The lookup runs from your browser against the public RDAP endpoint. No account, no API quota, no usage cap.
- Handles messy input. Paste https://www.example.com/page?q=1 and the tool normalizes to example.com before the lookup. No need to clean URLs first.
Common use cases
- Vet a website during an SEO competitive audit. Compare the age of your domain vs. competitors to interpret why an older site may still outrank a newer one despite weaker content.
- Spot phishing & scam domains during incident triage. If a suspicious URL points to a domain registered in the last 90 days, that is one of the strongest single signals to escalate or block.
- Evaluate a domain for purchase from an expired-domain auction. Confirm the listed age and registration history before bidding — many auction listings overstate the original registration year.
- Brand and trademark verification. Check whether a copycat domain was registered before or after your trademark filing to support a legal or UDRP case.
- M&A and acquisition due diligence. Cross-check the seller's claimed brand longevity against the actual registration date and ownership transfer history.
How to use it
- Paste or type a domain into the input — Plain domain (example.com), full URL with protocol and path, or www subdomain — all are normalized automatically.
- Press Enter or click 'Check domain age' — The tool queries the public RDAP endpoint for that domain. Most lookups complete in under a second.
- Read the registration date and computed age — The age is calculated as years + days since the first registration event recorded by the registry.
- Review registrar, expiration, and nameservers — Use these for deeper triage — registrar reputation, upcoming expiry risk, and hosting infrastructure clues.
- Run another domain immediately — There is no rate limit beyond what the RDAP server enforces. Edit the field and press Enter to look up the next one.
Examples
Look up an established domain
Input google.com
Output Registered 1997-09-15, ~28 years old, registrar MarkMonitor Inc., expires 2028-09-14.
Look up a new TLD domain
Input vercel.app
Output Registered 2018-02-19, ~7 years old, registrar Google LLC.
Detect a newly-registered phishing-style domain
Input support-account-verify-now-xyz.com
Output Registered within the last 30 days → strong signal to block or escalate during incident triage.
Troubleshooting
'Domain not found in RDAP registry'
Cause Either the domain is genuinely unregistered or it uses a TLD that does not publish RDAP data (rare for ccTLDs like .tr, .ru, .br).
Fix Verify the spelling, try without subdomain, or use a TLD-specific WHOIS service if RDAP is not supported.
Registration date is missing but the domain resolved
Cause Some country-code TLD registries return RDAP data without the registration event — they consider it private.
Fix For ccTLDs without RDAP date support, check the registrar's own WHOIS page directly.
Network error / CORS block
Cause The rdap.org public endpoint can briefly rate-limit or some networks block its origin headers.
Fix Retry after a few seconds. If your network blocks cross-origin requests, run the lookup from a different network.
Age looks wrong for a recently re-registered domain
Cause When a domain is dropped and re-registered, the registry resets the registration date. The tool reports current-registration age, not historical-ever age.
Fix If you need full ownership history, cross-reference with archive.org or a paid historical WHOIS service.
FAQ · 05
Where does the data come from?
Directly from the public RDAP (Registration Data Access Protocol) endpoint. RDAP is the IETF-standard structured replacement for WHOIS, used by ICANN and TLD registries. We do not store or cache results — every lookup hits the registry live.
Is the domain age the same as 'site age'?
Domain age is when the domain was registered; site age is when content first appeared. They are often close, but a domain can be parked for years before launch. For content-launch date, also check Internet Archive (archive.org/wayback).
Does domain age affect SEO ranking?
Domain age is a weak-to-moderate signal Google considers among hundreds of factors. Older, continuously-registered domains accumulate links and trust over time. A 10-year-old domain with strong content will usually outperform a 1-month-old domain with identical content, but content quality and links remain the dominant factors.
Why do some domains show no registration date?
Country-code TLDs (ccTLDs) like .ru, .br, or .tr may not publish RDAP registration events for privacy or policy reasons. The lookup still works for the parts of the record that are public.
Is there a daily limit?
No limit from us. The underlying RDAP service is generally generous but may briefly throttle very high-frequency requests from the same IP. For occasional manual lookups, you will not hit any cap.
Working in security and networking? You may also need JavaScript Obfuscator, User Agent Finder or What Is My IP — part of our security and networking toolkit.
Blog Posts About This Tool
Learn when to use Domain Age Checker, common workflows, and related best practices from our blog.
Domain Age and SEO: What Registration Date Tells You About a Site
Why domain age matters for SEO, how to check it for free with RDAP, and how to evaluate competitor domains. Practical use cases for SEO audits, phishing triage, and M&A.
Meta Tags Checker: Full On-Page SEO Audit in 30 Seconds
How to audit any page's title, description, OG, Twitter Card, canonical, and robots tags in 30 seconds with a free meta-tags checker. Common mistakes and fixes.
WebP vs PNG vs JPG: Which Image Format Should You Use?
WebP, PNG, and JPG each win different jobs. A practical guide to choosing an image format for the web — photos, logos, transparency — and converting between them losslessly.