Check domain age, registration date, expiry and registrar, even in Google search results. Fast WHOIS lookup for SEO.
Users
28
+6 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#135K
#112K among extensions
Version
1.5.1
updated 21 Jun 2026
Users
monthly, 4 months
Latest, 16 Oct 2026:28 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About WhoisAge - Domain Age Checker & WHOIS Lookup, SERP Domain Ages
Check domain age, registration dates, expiry, registrar and nameservers in one click - on any website, and even directly in Google search results.
WhoisAge is a fast domain age checker and WHOIS lookup tool for Chrome. Open it on any site to instantly see how long that domain has been registered, or search any domain manually. The result is a clean, readable report instead of a long raw WHOIS record. No account, no API key, no new tab.
WHY INSTALL WHOISAGE
Domain age and registration history are signals you check constantly in SEO research, competitor analysis, domain buying and everyday website verification. WhoisAge puts that information one click away, right where you are browsing, so you never have to copy a URL into a separate website age checker again.
1. Instant answers: the active website's domain age appears the moment you open the extension.
2. Readable, not raw: dates, registrar, status and nameservers in a clean report you can copy.
3. Honest data: missing fields are labelled "not disclosed" - WhoisAge never invents or estimates a date.
4. Broad coverage: domain age and WHOIS details across 1,500+ TLDs, including major country-code domains.
5. Private and free: no sign-up, no API key, and your browsing history is never tracked.
WHAT WHOISAGE SHOWS
1. Domain registration age in years or months
2. Total number of days since the recorded creation date
3. Domain creation, last-updated and expiration dates when published
4. Time remaining until expiration, with a clear countdown and warnings
5. Registrar name
6. Registrant organization when publicly disclosed
7. Country or region information when available
8. Configured nameservers
9. Registration status when the source can confirm it
10. A clear note on the data source and how fresh it is
ONE-CLICK LOOKUPS AND MANUAL SEARCH
Click the WhoisAge toolbar icon on any HTTP or HTTPS page and the active domain is detected and checked automatically. Researching a different site? Type or paste any domain into the search field. WhoisAge cleans common URL formatting and resolves the correct registrable domain before requesting registration data.
CHECK DOMAIN AGE RIGHT IN GOOGLE SEARCH RESULTS
Search anything on Google and WhoisAge automatically shows a side panel listing every domain in the organic results, each with its registration age. There is nothing to click - the ages appear next to the results as the page loads, and you can dismiss the panel any time. Instantly see how old the ranking websites are for a query, a fast read on how established your competition is before you commit to a topic.
This makes WhoisAge especially useful for SEO competitor research:
1. Gauge keyword competition at a glance by seeing how aged the top-ranking domains are
2. Spot newly registered competitors mixed into a results page
3. Compare established sites against fresh entrants for any search query
Domains with public registration data load their age automatically. For country-code registries without it, the panel shows a "Show age" button and runs a single live lookup only when you click it - so background scanning never burns through your daily allowance.
WORKS ACROSS 1,500+ TLDS
WhoisAge checks domain age and WHOIS details across more than 1,500 top-level domains - the most popular generic extensions and a comprehensive set of country-code domains.
Popular generic TLDs (gTLDs):
.com .net .org .info .biz .io .ai .co .app .dev .xyz .online .site .store .shop .tech .blog .cloud .design .me .tv .live .news .agency .studio .digital .world .group .media .finance .software .solutions .systems .network .marketing .email .top .space .website .pro .mobi .name .club .fun .link
Major country-code TLDs (ccTLDs):
1. Europe: .de (Germany) .uk / .co.uk (United Kingdom) .fr (France) .it (Italy) .es (Spain) .nl (Netherlands) .be (Belgium) .ch (Switzerland) .at (Austria) .se (Sweden) .no (Norway) .dk (Denmark) .fi (Finland) .pl (Poland) .pt (Portugal) .ie (Ireland) .cz (Czechia) .sk (Slovakia) .hu (Hungary) .ro (Romania) .gr (Greece) .bg (Bulgaria) .hr (Croatia) .si (Slovenia) .lt (Lithuania) .lv (Latvia) .ee (Estonia) .lu (Luxembourg) .is (Iceland) .li (Liechtenstein) .ua (Ukraine) .rs (Serbia) .eu (European Union)
2. Americas: .us (United States) .ca (Canada) .mx (Mexico) .br (Brazil) .ar (Argentina) .cl (Chile) .co (Colombia) .pe (Peru) .ve (Venezuela) .uy (Uruguay) .ec (Ecuador)
3. Asia-Pacific: .cn (China) .jp (Japan) .kr (South Korea) .in (India) .id (Indonesia) .sg (Singapore) .my (Malaysia) .th (Thailand) .ph (Philippines) .vn (Vietnam) .hk (Hong Kong) .tw (Taiwan) .au / .com.au (Australia) .nz (New Zealand) .pk (Pakistan) .bd (Bangladesh) .lk (Sri Lanka)
4. Middle East and Africa: .ae (UAE) .sa (Saudi Arabia) .il (Israel) .tr (Turkey) .za (South Africa) .ng (Nigeria) .ke (Kenya) .eg (Egypt) .ma (Morocco)
Popular repurposed ccTLDs used as brand domains: .io .ai .co .me .tv .ly .gg .to .cc .sh .fm .ws
These are highlights from a list of 1,500+ supported extensions. Coverage and the fields available vary by registry: some country-code registries publish full creation and expiry dates, while others provide limited data. When a registry does not publish a creation date, WhoisAge confirms registration and nameservers and clearly labels the age as not disclosed rather than guessing.
SUBDOMAIN AND MULTI-LEVEL DOMAIN HANDLING
Subdomains do not have their own registration date. When you check a hostname such as mail.example.com, WhoisAge keeps the requested hostname visible and clearly labels the result as the parent domain age for example.com. It also understands multi-level suffixes, so a hostname under example.co.uk resolves to the correct registrable domain instead of treating co.uk as the owner-controlled name.
WHAT MAKES WHOISAGE DIFFERENT
1. In-page, not a separate site: check the domain you are already viewing without opening a new tab.
2. Google SERP age panel: see registration age for a whole results page, built for SEO competitor and ke…
Growth
Window
Users
Change
Ratings
Rating
7 days
+3
+12.0%
0
0.00
30 days
+6
+27.3%
0
0.00
Chrome Web Store search rankings
Where WhoisAge - Domain Age Checker & WHOIS Lookup, SERP Domain Ages appears when people search the store, with the 30 day change