Domain age, tech stack, DNS, and trust signals — all in a single click.
Or hit Alt+Shift+D
🔍 Built for people who like to dig — security pros, marketers, journalists, domain investors, devs, and anyone who's ever asked "wait, when was this site even made?"
Cycling through real sites — or type one in to inspect.
Install DomainAge to inspect this domain
Real WHOIS, DNS, and tech detection for any site you visit.
Add to Chrome — it's freeDrop the ZIP into Chrome and pin the icon. Two minutes, no signup, no email — and it stays out of the way until you need it.
The toolbar badge silently shows each site's age as you browse. Tap the icon (or hit Alt+Shift+D) to open the full report.
Registration date, tech stack, DNS, registrar, expiry, Wayback link, SSL info — all in one panel under a second. Cached locally for the next 7 days.
A real bank's domain is 20 years old. A scam impersonating it is usually 4 days old. DomainAge flags every domain registered in the last 30 days — right on the toolbar — so the warning hits before you type your password.
Framework, CMS, CDN, payments, analytics — DomainAge fingerprints 50+ technologies on the page and groups them by category. Sizing up a competitor, scoping a freelance client, or just curious how Stripe is built? It's one click.
Pin domains you care about — yours, clients', competitors'. DomainAge pings you when expiry hits 30, 14, 7, 3, or 1 day out. No spreadsheet, no calendar reminder, no "the domain expired and now nothing works" Slack message at 2am.
Domain age shows right on the icon — no click needed.
IP, A records, NS — pulled from public resolvers.
One-tap shortcuts to archive snapshots and SSL info.
Last 12 domains stay one click away.
Alt+Shift+D or right-click any link.
Lookups stay local. No telemetry. Ever.
Sideload from the ZIP — Chrome Web Store version on the way.
Grab DomainAge.zip (~30 KB) and unzip it anywhere on your machine. No installer, no admin rights.
Open chrome://extensions in a new tab and flip on the Developer mode toggle in the top right.
Click Load unpacked, pick the unzipped folder, then pin the toolbar icon for one-click access. Done!
Not yet — review is in progress. The ZIP install above gives you the same build, today. Sideload it once and Chrome auto-updates it once it's listed.
Nope. Lookups hit public RDAP (WHOIS) and DNS-over-HTTPS endpoints directly from your browser, results are cached locally for 7 days, and nothing about you is collected. No analytics, no telemetry, no servers. The full source is on GitHub.
Yes — Alt + Shift + D opens DomainAge on the current tab. You can also right-click any link on a page to inspect that domain without navigating to it.
The icon greys out on internal pages — chrome://, file://, the new tab page, etc. — because there's no real domain to inspect there. As soon as you visit any normal site, it lights up again.
Edge — yes, it's Chromium-based, same install steps. Brave + Arc + Vivaldi too. Firefox port is on the roadmap.
You still get tech-stack detection, DNS records, hosting fingerprinting, and the SSL issuance date as a proxy for "first seen."
Tech detection — yes. WHOIS lookups skip on RFC1918 / non-public TLDs to keep things quiet.
Free forever. No signup. Drop the ZIP into Chrome and you're good to go.
Add to Chrome — it's free