codecademy.com 403
🔒 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 →
403
SSL Expires When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 88d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 355d
Hosting The company and location where this website's server is physically located.Read more →
Cloudflare
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
3/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
104.17.183.120
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 1
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🌐 CDN
Cloudflare
Screenshot 2026-08-20
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Captured: 2026-08-20 02:58:14 · 5.1 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) | 104.17.183.120104.17.184.120 |
| AAAA (IPv6) | 2606:4700::6811:b7782606:4700::6811:b878 |
| NS | serena.ns.cloudflare.comarnold.ns.cloudflare.com |
| MX | 5 codecademy-com.mail.protection.outlook.com |
| TXT | MS=ms80117904 figma-domain-verification=8c0a9ebe2f3a594d9d85faed8994ef2b073a992b28ea6a3e9fa3dc5582e18c25-1733342680 apple-domain-verification=6j9Dh5BuEBtMWMMg segment-site-verification=NJFFQLAhEEX3Uyz0vgrzNf3fplm6iYsg google-site-verification=M2VbalsxRQjMfelTnHdpgHIeqOKE6CYWnhj6VbGMFH8 google-site-verification=wkpord_VFYRlAcjf2hV21FHnsScCpA9YiMOQqACXsvQ google-site-verification=dqlGjeLuQLofS51hgFB6ptoJWM0EkcPoe7G1gmL9muw facebook-domain-verification=mm5a3aemk4cv9yfjikcr4de2xn0ait atlassian-domain-verification=m7Ac1Hv/T4ePJa3hgcqMgYHykrG65YAE+oy9aqlN+aDA0khgC0tZSgx/8G/3x/yv google-site-verification=1pIE7oxQFgbaSths1CckFlGEYBHxpp5pD9F_ZUCcSVA google-site-verification=vIdZhswzF-KMQmIllHFhS6VnmeHUvsCKTccrXjab-Lw v=spf1 include:customeriomail.com include:mail.zendesk.com include:_spf.google.com include:spf.extole.io include:spf.protection.outlook.com -all openai-domain-verification=dv-RFgs6gJx1YSwFBosC1y2RA1n google-site-verification=BAzjINWd55GJVC7I66cdi0SXSLENbMENU9tqByphDmQ google-site-verification=BB5unuHbdt4pYsHrMorf_R-mKcUdy5Bk2vvz0Ie_q44 google-site-verification=H0SayPMoRT_4rzjNrg2YvbxiRvQbqSTlwSM0D0wht8U google-site-verification=0pRbsGszBlAjZisxsJ2qJLXoXIKCdDlCSK_67hy5BjY MS=79764F463C8CD2E367B5BF7B1DF1B1C9FFE48501 Mosyle-verification-1750951629 google-gws-recovery-domain-verification=57013633 v=DKIM1; p= |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | CSC Corporate Domains, Inc. |
| Registered | 2011-08-10 |
| Expires | 2027-08-10 (in 355 days) |
| Last Updated | 2026-08-05 |
| 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) | codecademy.com |
| Issuer | Let's Encrypt |
| Valid From | 2026-08-18 |
| Valid Until | 2026-11-16 (88 days left) |
| SANs (3) | *.codecademy.com*.pr.codecademy.comcodecademy.com |
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 |
| strict-transport-security | max-age=31536000; includeSubDomains; preload |
| content-security-policy | default-src 'none'; script-src 'nonce-Pk36vuCAfiNII9xY79kJ3R' '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 | a2df853ffccd50a5-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 | 104.17.183.120 |
| Provider | Cloudflare |
| Organization | Cloudflare, Inc. |
| ASN | AS13335 |
| Country | US |
| City | San Francisco |
Security Score
A (7/7)
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Sitemap & Robots
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| robots.txt | Found Restricted |
| Sitemap | Found 13 sitemaps (index) pages |
| Disallowed paths |
/groups/
/profiles/
/intro-to-full-stack
/beta-catalog
/about/jobs
/courses/
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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 include:customeriomail.com include:mail.zendesk.com include:_spf.google.com include:spf.extole.io include:spf.protection.outlook.com -all |
| DMARC | ✓ Present v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:s:d |
| MX Records | 5 → codecademy-com.mail.protection.outlook.com |