obsidian.md 200
🔒 SSL Valid
HTTP Status A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
200
SSL Expires When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 67d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
N/A
Hosting The company and location where this website's server is physically located.Read more →
Cloudflare
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
2/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
104.26.0.147
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 5
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🌐 CDN
Cloudflare
Fastly
🎨 CSS Framework
Tailwind CSS
⚡ Cache
Varnish
☁️ Hosting
GitHub Pages
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DNS Records DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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| A (IPv4) | 104.26.0.147104.26.1.147172.67.74.64 |
| AAAA (IPv6) | 2606:4700:20::ac43:4a402606:4700:20::681a:1932606:4700:20::681a:93 |
| NS | lloyd.ns.cloudflare.comolga.ns.cloudflare.com |
| MX | 10 mxa.mailgun.org10 mxb.mailgun.org |
| TXT | google-site-verification=jn725qQXnosMN1rvL3WIhBD21Q9dnlbIvSunvry0YUI v=spf1 include:mailgun.org -all google-site-verification=hCBjVyv5OggVQ11ZswCGdImnr0iYALxKZ5Iw4HxGOF8 |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | N/A |
| Registered | N/A |
| Expires | N/A |
| Last Updated | N/A |
SSL Certificate Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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| Subject (CN) | obsidian.md |
| Issuer | Google Trust Services |
| Valid From | 2026-07-28 |
| Valid Until | 2026-10-26 (67 days left) |
| SANs (2) | obsidian.md*.obsidian.md |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | cloudflare |
| Content-Type | text/html; charset=utf-8 |
| strict-transport-security | max-age=7776000 |
| x-frame-options | SAMEORIGIN |
| x-content-type-options | nosniff |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | microphone=() |
| cache-control | max-age=600 |
| cf-ray | a2dec96aaba27be0-IAD |
| x-cache | HIT |
| via | 1.1 varnish |
Security headers HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
Hosting Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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| IP Address | 104.26.0.147 |
| Provider | Cloudflare |
| Organization | Cloudflare, Inc. |
| ASN | AS13335 |
| Country | US |
| City | San Francisco |
Security Score
A (6/7)
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Sitemap & Robots
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| robots.txt | Found Open |
| Sitemap | Not found |
Social & Meta Tags
Complete
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| Title | Obsidian - Sharpen your thinking |
| Description | The free and flexible app for your private thoughts. |
| OG Title | Obsidian - Sharpen your thinking |
| OG Description | The free and flexible app for your private thoughts. |
| OG Image | https://obsidian.md/images/banner.png |
| OG Type | website |
| OG Site Name | Obsidian |
| Twitter Card | summary_large_image |
| Language | en |
Mail Security Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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| SPF | ✓ Present v=spf1 include:mailgun.org -all |
| DMARC | ✓ Present v=DMARC1; p=quarantine; ruf=mailto:[email protected] |
| MX Records | 10 → mxa.mailgun.org 10 → mxb.mailgun.org |