kernel.org
The Linux Kernel Archives
kernel.org is registered with Gandi SAS since March 7, 1997 (29.7 years). The registration expires on March 8, 2027. The site runs on Content Security Policy, HSTS, Nginx. Its email security grade is C. Its SSL certificate is issued by Let's Encrypt and is valid for 63 more days.
- Domain age
- 29.7 yrs
- Technologies
- 3
- Email security
- C
- SSL days left
- 63
Registration
| Registrar | Gandi SAS |
|---|---|
| IANA ID | 81 |
| Registered | March 7, 1997 |
| Expires | March 8, 2027 |
| Updated | August 12, 2026 |
| Status | client transfer prohibited |
| Name servers | ns11.constellix.com, ns21.constellix.com, ns31.constellix.com, ns41.constellix.net, ns51.constellix.net, ns61.constellix.net |
| DNSSEC | Not signed |
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 172.105.4.254 | 73 |
| MX | smtp1.kernel.org 10 | 300 |
| MX | smtp2.kernel.org 10 | 300 |
| MX | smtp3.kernel.org 10 | 300 |
| NS | ns31.constellix.com | 86400 |
| NS | ns41.constellix.net | 86400 |
| NS | ns51.constellix.net | 86400 |
| NS | ns61.constellix.net | 86400 |
| NS | ns11.constellix.com | 86400 |
| NS | ns21.constellix.com | 86400 |
| TXT | v=spf1 include:_spf.kernel.org ~all | 600 |
| TXT | google-site-verification=nb4Wx5xBQM3b-a3OV2KSlPL786714Y7M6GfBtJf1opQ | 600 |
| AAAA | 2600:3c04:e001:324:0:1991:8:25 | 214 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YE2, Let's Encrypt |
| Expires | January 12, 2027 |
| Days remaining | 63 |
| Protocol | TLSv1.3 |
| Names | android.kernel.org, git.kernel.org, kernel.org, linux.kernel.org, lore.kernel.org, origin.kernel.org, tor.source.kernel.org, wireless.kernel.org, www.kernel.org |
Email security
- warnDKIM key found (selector: default) but it is only 1024 bits; 2048 is recommended.
- 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 quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- good3 MX record(s) found.
Homepage metadata
| Title | The Linux Kernel Archives |
|---|---|
| Language | en |
| Indexable | Yes |
| Word count | 248 |
About kernel.org
Who is the registrar of kernel.org?
kernel.org is registered with Gandi SAS (IANA ID 81).
When does kernel.org expire?
The current registration of kernel.org expires on March 8, 2027. It was first registered on March 7, 1997.
What technology does kernel.org use?
We detected 3 technologies on kernel.org, including Content Security Policy, HSTS, Nginx.
Does kernel.org protect its email with SPF and DMARC?
kernel.org scores 74/100 (grade C) for email security. DKIM key found (selector: default) but it is only 1024 bits; 2048 is recommended. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of kernel.org?
kernel.org uses ns31.constellix.com, ns41.constellix.net, ns51.constellix.net, ns61.constellix.net, ns11.constellix.com, ns21.constellix.com.