🌐
duolingo.nl 200
🔒 SSL Valid
✨ About this site
This domain is the Dutch web presence of the popular language-learning platform known for gamified lessons and a wide variety of available languages. It primarily serves users in the Netherlands looking to learn new languages interactively.
📊 What the data says
This website is currently active with an HTTP status of 200 and runs on an Apache server. Registered in 2021, it holds a valid SSL certificate until November 2026 and achieves a high desktop performance score of 92.
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 48d
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 →
0/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
103.224.182.251
Performance Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
N/A
Uptime
66.7%
Performance Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
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Desktop
Score
Accessibility
Best Practices
SEO
LCP
1.37s
CLS
0.000
FCP
1.01s
TTFB
0.00s
TBT
130ms
SI
1.17s
Checked: 2026-09-05 09:27:26.882988 · View on PageSpeed
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools.
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No technologies detected
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) | 103.224.182.251 |
| NS | ns4.abovedomains.comns3.abovedomains.com |
| MX | 10 park-mx.above.com |
| TXT (1) |
v=spf1 ip6:fdcf:abda:4154::/48 -all |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | Dynadot LLC |
| Registered | 2021-03-28 |
| Expires | N/A |
| Last Updated | 2026-02-02 |
| 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) | projectsierra.au |
| Issuer | Let's Encrypt |
| Valid From | 2026-09-11 |
| Valid Until | 2026-12-10 (48 days left) |
| SANs (90) | *.13519811-bbde-42b1-95b7-ae253a201f8b.duolingo.nl*.7860.us*.abc.duolingo.nl*.admin.lpdh5.xyz*.admin.magicjohnofficial.com*.admin.mostbet-en28.com*.android-api-cf.duolingo.nl*.android-api-stage.duolingo.nl*.android-api.duolingo.nl*.app.duolingo.nl*.app.lpdh5.xyz*.app.magicjohnofficial.com*.app.mostbet-en28.com*.backoffice.mostbet-en28.com*.banking.satisfaction-script.shop*.beta.nadeem.au*.checkout.magicjohnofficial.com*.comsuper.duolingo.nl*.credcrypto.satisfaction-script.shop*.crm.mostbet-en28.com +70 more |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | Apache |
| Content-Type | text/html; charset=UTF-8 |
| Final URL | https://duolingo.nl/ |
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 | 103.224.182.251 |
| Provider | Unknown |
| Organization | N/A |
| ASN | N/A |
| Location | N/A |
Security Score
F (1/7)
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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.
Areas hidden from crawlers:
Other paths
5
Show raw disallow rules (5)
/cpx.php
/medios1.php
/toolbar.php
/check_image.php
/check_popunder.php
| Sitemap | Not found |
Social & Meta Tags
Missing
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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 ip6:fdcf:abda:4154::/48 -all |
| DMARC | Not set |
| MX Records | 10 → park-mx.above.com |
Other TLDs Other top-level domain variants of this domain name and their availability. 21 active 1 for sale 1 available
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Uptime Monitor
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| Current Status | 🟢 Online |
| HTTP Status | 200 |
| Response Time | 337ms |
| Last Checked | 2026-10-21 16:45:27.678647 |
| Uptime (30d) | 66.7% |
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