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khanacademy.es 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 191d
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 →
3.167.88.86
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
2.43s
CLS
0.022
FCP
0.79s
TTFB
0.01s
TBT
618ms
SI
2.72s
Checked: 2026-09-04 07:26:56.858017 · 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
2026-09-02
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Captured: 2026-09-02 13:13:40 · 1.7 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) | 3.167.88.543.167.88.863.167.88.273.167.88.13 |
| NS | ns-940.awsdns-53.netns-1141.awsdns-14.orgns-1898.awsdns-45.co.ukns-254.awsdns-31.com |
| 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) | khanacademy.org |
| Issuer | Amazon |
| Valid From | 2026-10-12 |
| Valid Until | 2027-04-27 (191 days left) |
| SANs (35) | khanacademy.orgsalkhan.comwww.youcanlearnanything.orgwww.conacademy.comes.pixarinabox.orgwww.kahnacademy.compt.pixarinabox.comyoucanlearnanything.orgconacademy.compixarinabox.comwww.salkhan.comcamp.khankids.orgwww.khanacademy.esconacademy.orgwww.pixarinabox.orgkahnacademy.orgwww.khankids.orgsendgrid.khanacademy.orgkasandbox.orgwww.khanacademy.com +15 more |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | N/A |
| Content-Type | text/html; charset=utf-8 |
| Final URL | https://es.khanacademy.org/ |
| cache-control | private, no-store |
| via | 1.1 varnish |
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 | 3.167.88.86 |
| 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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No robots.txt
This site has no robots.txt file, so crawlers may access everything by default.
| Sitemap | Not found |
Social & Meta Tags
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No meta tags detected.
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; aspf=s; ruf=mailto:[email protected]; rua=mailto:[email protected] |
Other TLDs Other top-level domain variants of this domain name and their availability. 15 active 8 available
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Uptime Monitor
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| Current Status | 🟢 Online |
| HTTP Status | 200 |
| Response Time | 163ms |
| Last Checked | 2026-10-16 05:30:11.894487 |
| Uptime (30d) | 100% |