Tellstack

What clerk.com is built with

Read on 2026-10-28 12:43. 12 technologies spotted.

TechnologyCategoryVersionConfidenceTell
Google WorkspaceWebmail, Email100%dns MX: alt3.aspmx.l.google.com
HSTSSecurity100%headers strict-transport-security: max-age=63072000
Let's EncryptSSL/TLS certificate authorities100%certIssuer: Let's Encrypt, YR1
MetaMiscellaneous100%dns TXT: facebook-domain-verification=eryo8iycag42tq5bblk5eqbeyr05er
Next.jsJavaScript frameworks, Web frameworks, Web servers, Static site generator100%headers x-powered-by: Next.js
Open GraphMiscellaneous100%dom meta[property*='og:']: <meta property="og:title" content="Clerk | Authentication and User Management">
Priority HintsPerformance100%dom iframe[fetchpriority], img[fetchpriority], script[fetchpriority], link[fetchpriority]: <link rel="preload" as="script" fetchPriority="low" href="/_next/static/immutable/chunks/3wuqkuyu2sd4n.js">
RSSMiscellaneous100%dom link[type*='application'] @type: application/atom+xml
Radix UIUI frameworks100%dom a[data-radix-collection-item], button[data-radix-collection-item]: <button id="radix-_R_16b5tabdb_-trigger-Products" data-state="closed" aria-expanded="false" aria-controls="radix-_R_16b5
ReactJavaScript frameworks100%html: ;--stack-spill:3px"><button class="data-focus-visible:outline-focus block w-full cursor-pointer rounded-(--glass-r)" dat
VercelPaaS100%headers server: Vercel
WebpackMiscellaneous100%implied Next.js

Look up any site with GET /v1/lookup?domain=clerk.com. Start free.