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 ctsystem.com
| Type | Value | TTL | Priority |
|---|---|---|---|
| A | 3.121.89.171 |
3600 | - |
| MX | spam.ctsystem.com.tw |
3600 | 20 |
| MX | spam.ctsystem.com |
3600 | 10 |
| NS | dns.ctsystem.com |
3600 | - |
| TXT | v=spf1 ip4:59.124.14.91 ip4:60.248.141.193 include:_spf.willap.jp include:spf.protection.outlook.com ~all |
3600 | - |
| TXT | google-site-verification=LSZu_RdsRSIgMTwJ8J1VLvaWNv2NuCsg5nhAt-4uN1w |
3600 | - |
| TXT | google-site-verification=z4Lhr8-b73700SsNvzB8ly7bLpaaUiWRylVqbyfrzUk |
3600 | - |
| TXT | MS=ms59659318 |
3600 | - |
| TXT | MS=ms64898178 |
3600 | - |
| SOA | cts-web2.ctsystem.com |
3600 | - |
Bulk DNS Audit
Audited so far: 6,196 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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