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readme.com 200
🔒 SSL Valid
✨ About this site
This platform provides developer-friendly tools to create interactive API documentation.
📊 What the data says
This 28-year-old site runs on Next.js and React via Vercel with a valid SSL certificate. It utilizes Google Tag Manager and Font Awesome while maintaining HSTS security headers.
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 50d
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 →
Unknown
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
1/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
216.150.16.129
Performance Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
N/A
Uptime
100%
Performance Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
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Performance data not available yet.
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 5
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📊 Analytics
Google Tag Manager
🔤 Font/Icon
Font Awesome
⚙️ Framework
Next.js
☁️ Hosting
Vercel
⚡ JS Framework
React
Screenshot
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Screenshot is being captured...
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) | 216.150.1.129216.150.16.129 |
| NS | uma.ns.cloudflare.comjeremy.ns.cloudflare.com |
| MX | 10 mxb.mailgun.org5 alt1.aspmx.l.google.com5 alt2.aspmx.l.google.com1 aspmx.l.google.com10 aspmx2.googlemail.com10 aspmx3.googlemail.com10 mxa.mailgun.org |
| TXT (7) |
Services configured via TXT:
Google5
+1 other TXT record(s)
Show all TXT recordsgoogle-site-verification=cXc1VXd-gW9Ok-RCAoH4JPnOFZaHZuEZOzumt-DRTyU google-site-verification=mtYWM6ScD21bVWr1XOfSuZvliFRgP2XFqFfIvvPJxQE v09jkr2ple v=spf1 include:servers.mcsv.net include:mailgun.org include:_spf.google.com ~all google-site-verification=5sg7NR7vW-9QjQl0zSpSv_fxvbCCmzYeqHr1aUHBWNs google-site-verification=KjhE29LcHOwn9rQWPfLRgGV2NjnhNtE0MZkrq3VMTqg google-site-verification=RhQCb4Gc7sfx30ODVsG3v0mfQCQH_ESVWxzEowscyoM |
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) | readme.com |
| Issuer | Let's Encrypt |
| Valid From | 2026-09-07 |
| Valid Until | 2026-12-06 (50 days left) |
| SANs (1) | readme.com |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | Vercel |
| Content-Type | text/html; charset=utf-8 |
| Final URL | https://readme.com/ |
| strict-transport-security | max-age=63072000 |
| cache-control | public, max-age=0, must-revalidate |
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 | 216.150.16.129 |
| Provider | Unknown |
| Organization | N/A |
| ASN | N/A |
| Location | N/A |
Security Score
F (2/7)
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Sitemap & Robots
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Open to search engines
This site's robots.txt lets crawlers access its main content. Search engines can index it normally.
No paths are disallowed — everything is crawlable.
| Sitemap | Found 192 pages |
| Last modified | 2026-10-14T00:00:00.000Z |
Social & Meta Tags
Complete
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| Title | ReadMe · Developer-friendly API documentation |
| Description | ReadMe helps you create beautiful, interactive API documentation that developers love. |
| OG Title | ReadMe · Developer-friendly API documentation |
| OG Description | ReadMe helps you create beautiful, interactive API documentation that developers love. |
| OG Image | https://readme-lue.vercel.app/og/home |
| 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:servers.mcsv.net include:mailgun.org include:_spf.google.com ~all |
| DMARC | ✓ Present v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; aspf=r; adkim=r |
| MX Records | 10 → mxb.mailgun.org 5 → alt1.aspmx.l.google.com 5 → alt2.aspmx.l.google.com 1 → aspmx.l.google.com 10 → aspmx2.googlemail.com 10 → aspmx3.googlemail.com 10 → mxa.mailgun.org |
Other TLDs Other top-level domain variants of this domain name and their availability. 19 active 4 for sale
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Uptime Monitor
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| Current Status | 🟢 Online |
| HTTP Status | 200 |
| Response Time | 63ms |
| Last Checked | 2026-10-16 02:00:08.640023 |
| Uptime (30d) | 100% |
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