How to Use DNSDataView to Audit DNS Records — Step‑by‑Step
1. Download and install
- Visit the official NirSoft DNSDataView page and download the ZIP for your system.
- Unzip to a folder and run DNSDataView.exe (no installation required).
2. Prepare target list
- Create a plain-text list (one hostname or domain per line) if you’ll audit multiple targets.
- For single-host checks, you can enter the hostname directly in the tool.
3. Load hosts into DNSDataView
- File → Load From File to import your list, or File → New to add a single host.
- Confirm each entry appears in the main window.
4. Configure lookup options
- Options → DNS Server: choose a specific DNS server (e.g., 8.8.8.8) or leave blank to use the system resolver.
- Options → Query Type: select the record types to retrieve (A, AAAA, CNAME, MX, TXT, NS, SOA, etc.). For audits, at minimum request A, AAAA, MX, NS, SOA, TXT.
- Options → Timeout & Retries: increase timeout for slow networks; 2–5 seconds and 2 retries is typical.
5. Run lookups
- Select the hosts and press F8 (or File → Start Lookup).
- Monitor progress in the status bar. Results populate the table with columns for Hostname, Record Type, Data, TTL, DNS Server, Response Time, and Timestamp.
6. Interpret results (audit focus)
- A / AAAA: validate correct IP addresses and whether both IPv4/IPv6 exist as expected.
- CNAME: ensure aliases point to intended canonical names; watch for chained CNAMEs.
- MX: confirm mail exchangers and priorities match your mail configuration.
- NS: compare authoritative nameservers to your registrar settings.
- SOA: check serial numbers and refresh/expire values for replication health.
- TXT: verify SPF, DKIM selectors, DMARC, and other security records.
- TTL: low TTLs may indicate frequent expected changes; very high TTLs can delay propagation.
- Response Time/Errors: high latency or SERVFAIL/REFUSED may indicate resolver or network issues.
7. Export and document findings
- File → Save Selected Items to CSV/HTML/XML to create audit reports.
- Include: hostname, record type, record value, TTL, DNS server queried, timestamp, and any anomalies noted.
8. Automated / repeated audits
- Use command-line options (run DNSDataView.exe /scomma filename.csv or /stab filename.txt) to export results from scripts or scheduled tasks.
- Schedule periodic runs (daily/weekly) and compare exported CSVs to detect unexpected changes.
9. Remediation checklist
- If records mismatch expected configuration: update DNS at the authoritative provider (registrar/host) and document the change.
- For stale NS or SOA settings: verify delegation at registrar and notify secondary DNS hosts.
- For missing or incorrect SPF/DKIM/DMARC: update TXT records and test mail delivery authentication.
- For recurring lookup failures: test from different resolvers and inspect firewall/DNSSEC settings.
10. Tips and best practices
- Query multiple public resolvers (Google, Cloudflare, Quad9) to detect caching or propagation differences.
- Use low-concurrency lookups for authoritative servers to avoid rate-limiting.
- Keep a baseline export after major DNS changes for future comparisons.
- Combine DNSDataView with zone transfer checks (where permitted) and other tools (dig, nslookup) for deeper analysis.
If you want, I can produce a ready-to-run command-line script to run DNSDataView on a list of hosts and save CSV outputs.
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