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adblockplus.dev 200
🔒 SSL Valid
✨ About this site
This site serves as the developer portal and technical documentation hub for the widely used Adblock Plus browser extension and ad-blocking software. It is an established resource for developers and contributors working with the ecosystem of the world's most popular ad blocker. The name 'Adblock Plus' clearly describes its function as an enhanced ad-blocking tool, while the '.dev' top-level domain indicates that this specific space is intended for technical resources and developer-focused content.
📊 What the data says
The website is currently active with an HTTP 200 status and is hosted on Cloudflare. It is secured with an X-Frame-Options header and holds a valid SSL certificate that expires on December 20, 2026.
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 60d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 232d
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 →
104.21.65.228
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. 1
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🌐 CDN
Cloudflare
Screenshot
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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) | 104.21.65.228172.67.193.137 |
| AAAA (IPv6) | 2606:4700:3032::6815:41e42606:4700:3035::ac43:c189 |
| NS | mary.ns.cloudflare.combrad.ns.cloudflare.com |
| MX | 10 eforward2.registrar-servers.com10 eforward3.registrar-servers.com15 eforward4.registrar-servers.com20 eforward5.registrar-servers.com10 eforward1.registrar-servers.com |
| TXT (4) |
Services configured via TXT:
Google3
Show all TXT recordsgoogle-site-verification=mZKz7Ts6IOoaiSf-AAI_m9JyXx6xXH0-Qy4jJYnNfaA google-site-verification=r8RvY2a5aBKBam3P7JhU26_9Hg9DqYoC9eJMONkHFP0 google-site-verification=w7WwUXRzOfsj6RK4TDauewcpI_rsB-1tXmkN0MFoLa8 v=spf1 include:spf.efwd.registrar-servers.com ~all |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | Key-Systems LLC |
| Registered | 2021-06-10 |
| Expires | 2027-06-10 (in 232 days) |
| Last Updated | 2025-11-21 |
| Status | client transfer prohibited |
SSL Certificate Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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| Subject (CN) | adblockplus.dev |
| Issuer | Google Trust Services |
| Valid From | 2026-09-21 |
| Valid Until | 2026-12-20 (60 days left) |
| SANs (2) | adblockplus.dev*.adblockplus.dev |
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 |
| Final URL | https://adblockplus.dev/ |
| x-frame-options | sameorigin |
| cf-ray | a4db5dde7fbddddf-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 | 104.21.65.228 |
| 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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Blocked from crawlers
robots.txt disallows the entire site (/). Search engines are asked not to index any pages.
Areas hidden from crawlers:
Entire site
1
Show raw disallow rules (1)
/
| Sitemap | Not found |
Social & Meta Tags
Complete
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| Title | Adblock Plus | The world's #1 free ad blocker |
| Description | Adblock Plus, the most popular ad blocker on Firefox, Chrome, Safari, Android and iOS. Block pop-ups and annoying ads on websites like Facebook and YouTube. |
| OG Title | Adblock Plus | The world's #1 free ad blocker |
| OG Description | Adblock Plus, the most popular ad blocker on Firefox, Chrome, Safari, Android and iOS. Block pop-ups and annoying ads on websites like Facebook and YouTube. |
| OG Image | /img/adblockplus_promo.png |
| Canonical URL | https://adblockplus.org/ |
| 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:spf.efwd.registrar-servers.com ~all |
| DMARC | Not set |
| MX Records | 10 → eforward2.registrar-servers.com 10 → eforward3.registrar-servers.com 15 → eforward4.registrar-servers.com 20 → eforward5.registrar-servers.com 10 → eforward1.registrar-servers.com |
Other TLDs Other top-level domain variants of this domain name and their availability. 13 active 2 for sale 8 available
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Uptime Monitor
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| Current Status | 🟢 Online |
| HTTP Status | 200 |
| Response Time | 383ms |
| Last Checked | 2026-10-18 04:15:34.275316 |
| Uptime (30d) | 100% |
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