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 facebook.com
| Type | Value | TTL | Priority |
|---|---|---|---|
| A | 57.144.202.1 |
25 | - |
| AAAA | 2a03:2880:f365:1:face:b00c::25de |
29 | - |
| MX | smtpin.vvv.facebook.com |
956 | 10 |
| NS | b.ns.facebook.com |
17813 | - |
| NS | a.ns.facebook.com |
17813 | - |
| NS | d.ns.facebook.com |
17813 | - |
| NS | c.ns.facebook.com |
17813 | - |
| TXT | v=spf1 redirect=_spf.facebook.com |
169 | - |
| TXT | facebook-domain-verification=y7isfmi3kzyg1r4wophh9vyb6pgbda |
169 | - |
| TXT | zoom-domain-verification=4b2ef4e1-6dee-4483-9869-9bef353fd147 |
169 | - |
| TXT | google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s |
169 | - |
| TXT | google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA |
169 | - |
| TXT | google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY |
169 | - |
| SOA | a.ns.facebook.com |
3600 | - |
Bulk DNS Audit
Audited so far: 5,005 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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