astro.build 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 89d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 204d
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 →
0/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
104.18.1.156
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 8
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🌐 CDN
Cloudflare
🎨 CSS Framework
Tailwind CSS
⚙️ Framework
Astro
🏭 Generator
Astro v7.2.1
⚡ JS Framework
React
Svelte
Vue.js
🔧 Website Builder
Webflow
Screenshot 2026-08-20
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Captured: 2026-08-20 06:58:56 · 13.8 KB
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) | 104.18.1.156104.18.0.156 |
| AAAA (IPv6) | 2606:4700::6812:19c2606:4700::6812:9c |
| NS | kara.ns.cloudflare.comfelicity.ns.cloudflare.com |
| MX | 1 aspmx.l.google.com10 alt3.aspmx.l.google.com10 alt4.aspmx.l.google.com5 alt1.aspmx.l.google.com5 alt2.aspmx.l.google.com |
| TXT | google-site-verification=fLrdzEKoLvdYXcbj3tQrzT361r9d9_iEzJKfqZ8-2V8 |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | NameCheap, Inc. |
| Registered | 2021-03-13 |
| Expires | 2027-03-13 (in 204 days) |
| Last Updated | 2026-04-28 |
| Status | active |
SSL Certificate Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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| Subject (CN) | astro.build |
| Issuer | Google Trust Services |
| Valid From | 2026-08-20 |
| Valid Until | 2026-11-18 (89 days left) |
| SANs (3) | astro.buildplay.astro.build*.play.astro.build |
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 |
| cache-control | public, max-age=0, must-revalidate |
| cf-ray | a2e8908d6b0ac637-IAD |
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 | 104.18.1.156 |
| Provider | Cloudflare |
| Organization | Cloudflare, Inc. |
| ASN | AS13335 |
| Country | US |
| City | San Francisco |
Security Score
F (1/7)
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Sitemap & Robots
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| robots.txt | Found Open |
| Sitemap | Found 1 sitemaps (index) pages |
Social & Meta Tags
Complete
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| Title | Astro |
| Description | Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between. |
| OG Title | Astro |
| OG Description | Astro builds fast content sites, powerful web applications, dynamic server APIs, and everything in-between. |
| OG Image | https://astro.build/og/astro.jpg |
| OG Type | website |
| OG Site Name | Astro |
| Twitter Card | summary_large_image |
| Canonical URL | https://astro.build/ |
| Language | en |
Mail Security Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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| SPF | Not set |
| DMARC | Not set |
| MX Records | 1 → aspmx.l.google.com 10 → alt3.aspmx.l.google.com 10 → alt4.aspmx.l.google.com 5 → alt1.aspmx.l.google.com 5 → alt2.aspmx.l.google.com |