MULTI-PERSPECTIVE DNS MONITORING
Spot unexpected DNS changes. Review the DNS evidence and see when recovery is confirmed.
One-time scan. No account required. Create an account for ongoing monitoring.
Compare authoritative nameservers, recursive resolvers and DNS over HTTPS.
Built for DevOps & SRE · Email operations · MSPs
Free plan: 3 domains, 15 active monitors and 1 member per organization. Minimum check interval: 60 minutes. All Free plan limits
192.0.2.40192.0.2.40192.0.2.40192.0.2.40The zone, authoritative servers and both resolver caches return 192.0.2.40.
The zone and authoritative answer changed. Resolver B keeps its cached answer until its TTL expires. No incident confirmed yet.
Three simulated hourly checks failed the agreement rule. This example does not predict real detection time.
Both resolvers now return 192.0.2.41. Two simulated passing checks confirm recovery.
Example rule: all answers must agree. Checks 1 hour apart; incident after 3 failures, recovery after 2 passes. Times are illustrative, not elapsed time.
Root/TLD delegation omitted. Provider provisioning is separate from DNS queries.
No live DNS queries. This demo does not create monitors or incidents.
INSIDE DNStracr
Follow the same example through domain health, DNS answers and recovery. Open any screenshot for a closer look. All data is fictional.
See which domains are healthy and where monitoring is missing.
Compare the configured record with answers from nameservers, recursive resolvers and DNS over HTTPS.
Trace the confirmed DNS change and see when recovery was confirmed.
LESS GUESSWORK. MORE CONTEXT.
Investigate DNS after a deployment or Cloudflare change. Compare configured records with observed answers, and allow expected CDN or GeoDNS differences while keeping missing records and query failures visible.
Review changes to MX, SPF, DKIM and DMARC during a mail-provider move or policy update. Follow failed checks and confirmed recovery. DNS checks do not test actual email delivery.
Organize client domains with tags, review monitored resources and compare before-and-after answers. Use the change and incident history to see what changed and when recovery was confirmed.
DNS MONITORING, EXPLAINED
DNStracr compares DNS answers from authoritative nameservers, recursive resolvers and DNS over HTTPS. It tracks record changes, checks configured expectations and follows confirmed incidents through recovery.
DNS caching, CDN routing and GeoDNS can produce different answers. DNStracr lets you configure expected resolver variation while keeping missing records, query failures and unexpected authoritative differences visible.
A domain or record timeline brings DNS changes and incidents together. Mail analysis helps you inspect MX, SPF, DKIM and DMARC records, alongside DNSSEC evidence. Raw-check retention is shown separately from retained changes and incidents.
Create a free account and verify your email. The free DNS scan needs no account.
FREE PLAN
Create a free account to add your domain and track DNS changes over time.
Per organization: 1 member, 1 notification target and 1 Cloudflare connection. 7 days of raw check history.
Account organization budgets also apply. Paid plans and checkout are not available yet. Features and limits may change. Help Center
NEWSLETTER
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