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duolingo.co.uk 403
🔒 SSL Valid
✨ AI Description
This website appears to be protected by Cloudflare and may present a “Just a moment…” challenge to verify visitors before granting access. It’s likely associated with Duolingo’s UK web presence, helping route users to language-learning services while filtering automated traffic.
HTTP Status A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
403
SSL Expires When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 36d
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 →
2/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
172.67.134.143
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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Desktop
Score
Accessibility
Best Practices
SEO
LCP
0.37s
CLS
0.000
FCP
0.22s
TBT
2,361ms
SI
1.34s
Checked: 2026-09-05 09:18:13.709278 · View on PageSpeed
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 1
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🌐 CDN
Cloudflare
Screenshot
2026-09-02
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Captured: 2026-09-02 11:32:40 · 5.7 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) | 172.67.134.143104.21.6.64 |
| AAAA (IPv6) | 2606:4700:3034::6815:6402606:4700:3030::ac43:868f |
| NS | chelsea.ns.cloudflare.comdale.ns.cloudflare.com |
| MX | 10 mail2.quickdns.co.uk |
| TXT (1) |
v=spf1 -all |
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) | duolingo.co.uk |
| Issuer | Google Trust Services |
| Valid From | 2026-08-24 |
| Valid Until | 2026-11-22 (36 days left) |
| SANs (2) | duolingo.co.uk*.duolingo.co.uk |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 403 |
| Server | cloudflare |
| Content-Type | text/html; charset=UTF-8 |
| Final URL | https://duolingo.co.uk/ |
| content-security-policy | default-src 'none'; script-src 'nonce-yT9RN1KV21PJYCrg4xS9Aa' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self' |
| x-frame-options | SAMEORIGIN |
| x-content-type-options | nosniff |
| referrer-policy | same-origin |
| permissions-policy | accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* |
| cf-ray | a4b6c546a9bdc999-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 | 172.67.134.143 |
| Provider | Unknown |
| Organization | N/A |
| ASN | N/A |
| Location | N/A |
Security Score
A (6/7)
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Sitemap & Robots
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No robots.txt
This site has no robots.txt file, so crawlers may access everything by default.
| Sitemap | Not found |
Social & Meta Tags
Missing
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| Title | Just a moment... |
| Language | en-US |
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 -all |
| DMARC | ✓ Present v=DMARC1; p=reject; adkim=s; aspf=s; |
| MX Records | 10 → mail2.quickdns.co.uk |
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 | 🟢 Client Error |
| HTTP Status | 403 |
| Response Time | 29ms |
| Last Checked | 2026-10-15 07:15:08.106251 |
| Uptime (30d) | 100% |
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