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 duo.com
| Type | Value | TTL | Priority |
|---|---|---|---|
| A | 18.238.109.36 |
60 | - |
| A | 18.238.109.81 |
60 | - |
| A | 18.238.109.129 |
60 | - |
| A | 18.238.109.2 |
60 | - |
| MX | rcdn-mx-01.cisco.com |
300 | 20 |
| MX | alln-mx-01.cisco.com |
300 | 10 |
| MX | aer-mx-01.cisco.com |
300 | 30 |
| NS | ns-1365.awsdns-42.org |
21018 | - |
| NS | ns-932.awsdns-52.net |
21018 | - |
| NS | ns-55.awsdns-06.com |
21018 | - |
| NS | ns-1733.awsdns-24.co.uk |
21018 | - |
| TXT | google-site-verification=QSlNcf5REPqDzZZtYQdQ02iTtFdCkF4iGzRgOHWeAfk |
300 | - |
| TXT | identrust_validate=SMpkw2Y899uXgKrzdHnqptIfXiIOyDNlX1foFF1S209M |
300 | - |
| TXT | google-site-verification=_6xJQkVWQvhjZ8WH17r2qEjOu0CYifwUq5DqV-aUPIE |
300 | - |
| TXT | v=spf1 ip4:72.35.40.113/28 ip4:66.51.154.240/29 include:_spf.google.com include:_spf.salesforce.com include:mktomail.com include:stspg-customer.com include:_spf.intacct.com include:servers.mcsv.net ~all |
300 | - |
| TXT | identrust_validate=VOOjXXB2PpF7kC14MiiEHi40phwnkIP1dhJ1AbyZxWKP |
300 | - |
| TXT | google-site-verification=uo-yyMBObeQzZDH55aAFLRLyf0IiN20p0GJ0H6N2jQQ |
300 | - |
| TXT | google-site-verification=F16Zf7RnF8CVcYnsbn6C308KFSeldSRrLiJK1cCgoBQ |
300 | - |
| TXT | google-site-verification=FyHTkA00weOnJqC50U6D_1Etz0FeTAV36UzX-mR0t7Y |
300 | - |
| TXT | google-site-verification=88KLpNEv0nOJ-yRHH3mp3TIvrG4rhNTP3DbODLQeIYg |
300 | - |
| TXT | google-site-verification=WvGzO9Z62GF-06EZawhrguz4lX-3soAJz8l5Zdd0kpc |
300 | - |
| TXT | workplace-domain-verification=M0nohbh4MpXazNtpfeLQrdlEAbaeQ3 |
300 | - |
| TXT | google-site-verification=UxTqzaF64RMmCuE_cfz67aerfbJyPW7jSWJaDRf8U4Q |
300 | - |
| TXT | google-site-verification=gY1gXbTT44Hc2xjnx-TmKdBLXKzpthxWKGhlqJL0EDw |
300 | - |
| TXT | apple-domain-verification=0NFHW4xLPA7qMAUl |
300 | - |
| TXT | google-site-verification=zagew00MIXPj4NT7NSuvolRYA9BWUFvOvUU9On5SkLs |
300 | - |
| SOA | ns-55.awsdns-06.com |
900 | - |
Bulk DNS Audit
Audited so far: 4,782 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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