Domains: full A/AAAA/MX/NS/TXT/SOA/CNAME audit. IPs: reverse DNS (PTR) lookup. Resolves over DNS-over-HTTPS (Google/Cloudflare) when the host blocks UDP/53, so it works on shared hosting.
Results for Kernel.org
| Type | Value | TTL | Priority |
|---|---|---|---|
| A | 172.105.4.254 |
300 | - |
| AAAA | 2600:3c04:e001:324::1991:8:25 |
300 | - |
| MX | smtp1.Kernel.org |
300 | 10 |
| MX | smtp3.Kernel.org |
300 | 10 |
| MX | smtp2.Kernel.org |
300 | 10 |
| NS | ns31.constellix.com |
2501 | - |
| NS | ns61.constellix.net |
2501 | - |
| NS | ns11.constellix.com |
2501 | - |
| NS | ns21.constellix.com |
2501 | - |
| NS | ns51.constellix.net |
2501 | - |
| NS | ns41.constellix.net |
2501 | - |
| TXT | v=spf1 include:_spf.kernel.org ~all |
600 | - |
| TXT | google-site-verification=nb4Wx5xBQM3b-a3OV2KSlPL786714Y7M6GfBtJf1opQ |
600 | - |
| SOA | ns11.constellix.com |
21600 | - |
Bulk DNS Audit
Audited so far: 235 indicators.
▶ Run Bulk DNS Audit (auto-continues)
Sweeps every stored domain/IP lacking DNS data, in time-boxed batches that auto-continue in the browser until done.
For the whole database at once (no browser), run php dns-audit.php bulk=run on the CLI or via cron.
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