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DNS A Record Change Watch via DNS.SB
x402
DNS A Record Change Watch via DNS.SB is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Monitors DNS A records for a domain via DNS.SB, comparing current results to a 90-day history and returning whether the record changed, what changed, and when.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dns a via dnssb: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.
Output
Returns the current DNS A record answer for the domain, a boolean 'changed' flag indicating whether it differs from the previous check, a list of fields that changed with before/after values, and the timestamp of when the record was last seen. History is retained for 90 days.
Example use cases
Alert on unexpected IP address change
“Keep an eye on the DNS A record for mycompany.com via DNS.SB and tell me immediately if the IP address changes — I want to see the before and after values so I can investigate.”
Verify DNS propagation after migration
“We just migrated our servers for api.myapp.com — can you check the DNS A record via DNS.SB and compare it to what it was before so I can confirm the new IP has propagated?”
Security monitoring for domain hijacking
“Set up a watch on the A record for mybrand.com using DNS.SB and flag it if there's any change — I'm worried about DNS hijacking and want a record of when it was last seen unchanged.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/a/via/dnssb?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to detect changes in DNS A records specifically as answered by DNS.SB, and want a built-in diff against a stored historical baseline rather than doing your own comparison. It is ideal for scheduled monitoring workflows, security alerting on IP changes, or verifying DNS propagation after a migration. Prefer it over a plain DNS lookup endpoint when change detection and before/after diffing are required.
Side effects
- Domain not previously queried — no baseline exists for comparison, so 'changed' will be false or undefined on first call
- DNS.SB resolver unavailable — upstream resolution failure
- Invalid or malformed domain name — query may return an error
- Domain has no A record — empty result with NXDOMAIN or NOERROR/no data response
- 90-day history window expired — previous result no longer retained, no diff available
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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