Cross-Reference Verification
Independent verification of core DNS records against public resolvers. DNS Tool queries Google Public DNS and Cloudflare DNS at scan time and compares their responses to our own results.
Verification Summary
Providers Queried
Our Records vs Cloudflare DNS
| Type | DNS Tool | Cloudflare | Status |
|---|---|---|---|
| A |
|
|
match |
| AAAA | No records | No records | match |
| MX |
|
|
match |
| NS |
|
|
match |
| TXT |
|
|
match |
| CNAME | No records | No records | match |
Our Records vs Google Public DNS
| Type | DNS Tool | Status | |
|---|---|---|---|
| A |
|
|
match |
| AAAA | No records | No records | match |
| MX |
|
|
match |
| NS |
|
|
match |
| TXT |
|
|
match |
| CNAME | No records | No records | match |
Verify It Yourself
You do not have to trust us. Use these links to run the same queries yourself.
Google Admin Toolbox
DNS-over-HTTPS APIs
Methodology
At scan time, DNS Tool resolves the target domain's core records (A, AAAA, MX, NS, TXT, CNAME) using five independent public DNS resolvers — Cloudflare, Google Public DNS, Quad9, OpenDNS, and DNS4EU. As a separate verification step, it then queries Google Public DNS (via DNS-over-HTTPS) and Cloudflare DNS (via DNS-over-HTTPS) to cross-reference those results for the same record types.
Records are normalized (trailing dots removed, case-folded, sorted) and compared set-to-set. A match means identical record sets. Partial means overlapping but not identical (common during DNS propagation). A mismatch means no overlap — which may indicate a configuration error, propagation delay, or split-horizon DNS.
This cross-referencing is not a guarantee of correctness — it is corroboration. Multiple independent sources observing the same records increases confidence in the data. This is standard practice in intelligence analysis (per ICD 203) and scientific methodology.
Cross-reference schema version: 1.0 · Generated: 2026-04-20T00:44:40Z
Machine-Readable Data
This cross-reference verification data is available as structured JSON for other tools, researchers, and investigators to consume.
View JSON