Rank #3,428Updated November 10, 2026
jenkins.io
Jenkins
The site runs on Varnish, cdnjs, Fastly and 8 other technologies. Its email security grade is B. Its SSL certificate is issued by Let's Encrypt and is valid for 63 more days.
- Domain age
- —
- Technologies
- 11
- Email security
- B
- SSL days left
- 63
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 128.24.70.119 | 139 |
| MX | mxb.mailgun.org 10 | 3600 |
| MX | mxa.mailgun.org 10 | 3600 |
| NS | ns1-06.azure-dns.com | 172800 |
| NS | ns2-06.azure-dns.net | 172800 |
| NS | ns3-06.azure-dns.org | 172800 |
| NS | ns4-06.azure-dns.info | 172800 |
| CAA | issue 0 amazon.com | 300 |
| CAA | issue 0 digicert.com; cansignhttpexchanges=yes | 300 |
| CAA | issue 0 godaddy.com | 300 |
| CAA | issue 0 letsencrypt.org | 300 |
| CAA | issue 0 pki.goog; cansignhttpexchanges=yes | 300 |
| CAA | issue 0 globalsign.com | 300 |
| CAA | issue 0 sectigo.com | 300 |
| TXT | jetbrains-domain-verification=9memu05gp112di1q7gijggppf | 300 |
| TXT | libera-MjLnxZ2KPqJJnJr6X4WFovAe | 300 |
| TXT | _globalsign-domain-verification=b1pmSjP4FyG8hkZunkD3Aoz8tK0FWCje80-YwtLeDU | 300 |
| TXT | v=spf1 include:mailgun.org include:sendgrid.net include:_spf.google.com ~all | 300 |
| TXT | google-site-verification=4Z81CA6VzprPWEbGFtNbJwWoZBTGmTp3dk7N0hbt87U | 300 |
| AAAA | 2603:1030:408:3::2bd | 300 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR2, Let's Encrypt |
| Expires | January 12, 2027 |
| Days remaining | 63 |
| Protocol | TLSv1.3 |
| Names | jenkins-ci.org, jenkins.io, www.jenkins-ci.org, www.origin.jenkins.io |
Email security
BScore 83/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnSPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it.
- 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 record found.
- goodSPF ends with ~all: servers you have not listed are marked as suspicious (soft fail).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodDKIM keys found (selector: s1, s2).
- good2 MX record(s) found. Mail is handled by Mailgun.
Homepage metadata
| Title | Jenkins |
|---|---|
| Description | Jenkins – an open source automation server which enables developers around the world to reliably build, test, and deploy their software |
| Language | en |
| Canonical | https://www.jenkins.io/ |
| Indexable | Yes |
| Word count | 1156 |
About jenkins.io
What technology does jenkins.io use?
We detected 11 technologies on jenkins.io, including Varnish, cdnjs, Fastly, jsDelivr, Font Awesome, jQuery.
Does jenkins.io protect its email with SPF and DMARC?
jenkins.io scores 83/100 (grade B) for email security. SPF uses 8 of the 10 allowed DNS lookups. Adding another service may break it. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of jenkins.io?
jenkins.io uses ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org, ns4-06.azure-dns.info.