Rank #1,494Updated November 10, 2026
kubernetes.io
Kubernetes
The site runs on Google Analytics 4, Netlify, jQuery and 2 other technologies. Its email security grade is F. Its SSL certificate is issued by Let's Encrypt and is valid for 60 more days.
- Domain age
- —
- Technologies
- 5
- Email security
- F
- SSL days left
- 60
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 3.33.186.135 | 1464 |
| A | 15.197.167.90 | 1464 |
| MX | alt3.aspmx.l.google.com 10 | 3600 |
| MX | alt2.aspmx.l.google.com 5 | 3600 |
| MX | alt4.aspmx.l.google.com 10 | 3600 |
| MX | alt1.aspmx.l.google.com 5 | 3600 |
| MX | aspmx.l.google.com 1 | 3600 |
| NS | ns-cloud-a4.googledomains.com | 21600 |
| NS | ns-cloud-a3.googledomains.com | 21600 |
| NS | ns-cloud-a1.googledomains.com | 21600 |
| NS | ns-cloud-a2.googledomains.com | 21600 |
| CAA | issue 0 pki.goog | 3600 |
| CAA | issue 0 letsencrypt.org | 3600 |
| TXT | google-site-verification=qmfDqvHjWJBL78F9saApyW0VFRyymuSMpqMn8gtGmd0 | 3600 |
| TXT | v=spf1 include:_spf.google.com mail.kubernetes.io ~all | 3600 |
| TXT | google-site-verification=oPORCoq9XU6CmaR7G_bV00CLmEz-wLGOL7SXpeEuTt8 | 3600 |
| TXT | 1password-site-verification=SOZCTQ66DFFXVGPOWOHMVDIBVI | 3600 |
Technology stack
Analytics and advertising IDs
google_analytics:G-JPP6RFM2BPSSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE1, Let's Encrypt |
| Expires | January 9, 2027 |
| Days remaining | 60 |
| Protocol | TLSv1.3 |
| Names | kubernetes.io, www.kubernetes.io |
Email security
FScore 23/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- badNo DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain.
- warnThe SPF record has syntax problems: Unknown SPF term 'mail.kubernetes.io'.
- warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- good5 MX record(s) found. Mail is handled by Google Workspace.
Homepage metadata
| Title | Kubernetes |
|---|---|
| Description | Kubernetes, also known as K8s, is an open source system for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery. Kubernetes builds upon 15 years of experience of running production workloads at Google, combined with best-of-breed ideas and practices from the community. Planet scaleDesigned on the same principles that allow Google to run billions of containers a week, Kubernetes can scale without increasing your operations team. |
| Language | en |
| Structured data | Organization |
| Indexable | Yes |
| Word count | 637 |
About kubernetes.io
What technology does kubernetes.io use?
We detected 5 technologies on kubernetes.io, including Google Analytics 4, Netlify, jQuery, HSTS, YouTube.
Does kubernetes.io protect its email with SPF and DMARC?
kubernetes.io scores 23/100 (grade F) for email security. No DMARC record. Receivers have no instructions for mail that fails SPF and DKIM, and you get no reports about who sends as your domain. The SPF record has syntax problems: Unknown SPF term 'mail.kubernetes.io'.
What are the name servers of kubernetes.io?
kubernetes.io uses ns-cloud-a4.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com.