Understanding alerts

An alert is created any time a DNS check produces a snapshot that differs from the previous one for a given host and record type. Three types of changes are detected:

CDNs like Cloudflare and Fastly periodically rotate the A/AAAA addresses they serve from their own IP pools. These changes are technically real but rarely actionable, and can generate noisy alerts for domains behind a CDN.

You can enable Ignore CDN address changes in your notification settings to suppress alerts when A/AAAA records rotate between IPs belonging to the same CDN provider. Real changes, like leaving the CDN entirely or switching from one provider to another, still trigger alerts.

Suppressed changes are still recorded in your DNS change history and are labeled Expected CDN change so you have a full audit trail even when alerts are silenced.

When changes are detected, OneDollarDNS immediately sends an email notification to the address associated with your account. The email includes:

• The affected domain and host name
• The record type (A, MX, TXT, etc.)
• The change type (added, removed, or modified)
• The previous value (for removed and modified records)
• The new value (for added and modified records)
• The time the change was detected

If a single DNS check detects multiple changes across multiple hosts or record types, they are grouped into a single email to avoid inbox noise.

Alerts appear in two places:

• Dashboard — a summary of recent alerts across all your domains, giving you a quick overview of any active changes.
• Domain detail page — a full list of alerts for a specific domain, grouped by host. Unacknowledged alerts are highlighted so they stand out.

Each host displays a status indicator:

Once you've reviewed a change, you can acknowledge it to remove it from the active alert view. Acknowledging an alert means you've seen and noted the change. It doesn't delete the record, which remains in the full history.

Two acknowledgement options are available on the domain page:

• Acknowledge — marks a single alert as reviewed.
• Acknowledge all — clears all unacknowledged alerts for the domain at once.

Every alert is permanently recorded, giving you a full audit trail of all DNS changes to your domains. Acknowledged alerts remain accessible in the domain view, giving you a complete timeline of changes even after they've been reviewed.