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DNS CNAME Change Watch via DNS.SB
x402
DNS CNAME 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 CNAME DNS records for a domain via DNS.SB, detects changes compared to the previous check, and returns current values with a changed flag and before/after diffs.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dns cname 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 CNAME records for the domain as answered by DNS.SB, a boolean 'changed' flag, a list of fields that changed with before/after values, and a timestamp of when the records were last seen. Results are compared against the previous check stored for up to 90 days.
Example use cases
CDN migration detection
“Keep an eye on the CNAME records for myshop.com using DNS.SB and alert me the moment they change — I want to know immediately if our CDN provider gets swapped out unexpectedly.”
Domain hijacking early warning
“Set up a watch on the CNAME records for secure-login.mybrand.com and tell me if anything has changed, including what the old and new values are — we need to catch any unauthorized DNS changes fast.”
Deployment verification check
“After our infrastructure update, check whether the CNAME records for api.mycompany.com have changed from what they were before — show me the before and after values so I can confirm the deployment went through.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/cname/via/dnssb?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to detect changes in CNAME DNS records specifically as seen through the DNS.SB resolver, and you want automatic before/after diffing without managing your own snapshot state. Prefer it over raw DNS lookup endpoints when your goal is change detection and alerting rather than one-time record retrieval. Ideal for scheduled polling workflows where you need to be notified only when something actually changes.
Side effects
- Domain not previously checked — no baseline exists for comparison, so 'changed' is indeterminate on first call
- DNS.SB resolver unavailable or times out — no records returned
- Invalid domain format — query rejected
- CNAME record does not exist for domain — empty record set returned
- 90-day baseline expired — previous snapshot no longer available for comparison
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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