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clerk.com Paid content

Categories: Development

The easiest way to add authentication and user management to your application. Purpose-built for React, Next.js, Remix, and “The Modern Web”.

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Updated: 2026-09-03 16:53 Language: English (default) Access: Normal

Profile views 9 Outbound visits 9
Clerk Full homepage screenshot

Website Overview

An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. Page metadata, canonical configuration and social previews work together to provide more consistent search and sharing presentation.

Domain and Registration

Registered in 1996, this domain has about 30 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.

DNS and Email

The lowest TTL is 35 seconds, supporting rapid record changes at the cost of more frequent lookups. Nameservers are provided by easydns.com, indicating managed DNS hosting. MX records point to the Google Workspace email service. No CNAME was found; the observed records resolve directly to addresses. SPF and DMARC are configured. DKIM status is unknown.

TLS and Certificates

The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 days, consistent with a short renewal cycle.

HTTP and Browser Security

The response lacks these common security headers: CSP, Permissions-Policy. CORS permits any origin to read this response. This is common for public resources; sensitive responses need narrower handling. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. No obvious internal addresses or debug information were found in the headers. The Server header contains the custom value Vercel.

Technology Stack Analysis

The public page identifies Next.js, Vercel without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

Twitter Card metadata is configured. JSON-LD includes Organization data, helping describe the organization as an entity. The title has 42 characters, within a common display range. A meta description is present, with 141 characters. The observed directives allow indexing and link following.

Hosting and Email

DNSeasydns.com
HostingVercel
EmailGoogle Workspace
Location United States flagWalnut, California, United States 76.76.21.21

Pages, Search and Sharing

Meta descriptionThe easiest way to add authentication and user management to your application. Purpose-built for React, Next.js, Remix, and “The Modern Web”.
Canonical URLhttps://clerk.com
LanguageEnglish (default)
Twitter Cardsummary_large_image

Social Sharing Preview

10 fields

robots.txt (opens in a new tab)

5 rules
All bots 1 allowed · 4 disallowed
  • Allow/
  • Disallow/workspace/
  • Disallow/apps/
  • Disallow/docs/core-1/
  • Disallow/docs/core-2/

Sitemaps

1

Registration details RDAP / WHOIS

RegistrarRegister.com - Network Solutions, LLC
Registered1996-04-10
Expires2033-04-11
Domain statusclient delete prohibited、client transfer prohibited、client update prohibited
Nameserversns1.dnsimple.com、ns2.dnsimple.com、ns3.dnsimple.com、ns4.dnsimple-edge.org、ns4.dnsimple.com
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Aclerk.com76.76.21.2135—
MXclerk.comaspmx.l.google.com36001
MXclerk.comalt1.aspmx.l.google.com36005
MXclerk.comalt2.aspmx.l.google.com36005
MXclerk.comalt3.aspmx.l.google.com360010
MXclerk.comalt4.aspmx.l.google.com360010
NSclerk.comdns1.easydns.com3600—
NSclerk.comdns2.easydns.net3600—
NSclerk.comdns3.easydns.ca3600—
NSclerk.comns1.dnsimple.com3600—
NSclerk.comns2.dnsimple.com3600—
NSclerk.comns3.dnsimple.com3600—
NSclerk.comns4.dnsimple-edge.org3600—
TXTclerk.comfacebook-domain-verification=eryo8iycag42tq5bblk5eqbeyr05er3600—
TXTclerk.comgoogle-site-verification=0Euha-dNJyVBz1uzPctmygqAzJVrrLrwH5fjF2gtzC83600—
TXTclerk.comgoogle-site-verification=I3pW-9V6U96n5a3JuKNwvWI8LDBID7VhZC7y_Gj0EJA3600—
TXTclerk.comgoogle-site-verification=__ETgR0hDm4DdUsLbaP5-AezL9IEwX8N4yg3FZQO9aA3600—
TXTclerk.comgridinsoft-verify=pk53z0opijmbcfcriezs2ozkyjubytjz8x96g7nijudxym7j2wc78wftw3bozwaf3600—
TXTclerk.comj0k3qmnogs3600—
TXTclerk.comv=spf1 include:_spf.google.com ~all60—
DMARC_dmarc.clerk.comv=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; ri=3600;60—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectclerk.com
IssuerLet's Encrypt
Valid until2026-10-09T02:08 · Remaining when checked: 35 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
cache-controlpublic, max-age=0, must-revalidate
serverVercel
strict-transport-securitymax-age=63072000
x-frame-optionsdeny
x-content-type-optionsnosniff
referrer-policysame-origin
access-control-allow-origin*
set-cookieRedacted

Identified technologies

Next.jsVercel

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