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DNS CNAME Change Watch via NextDNS
x402
DNS CNAME Change Watch via NextDNS 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 NextDNS, detecting changes by comparing the current lookup result against the previously stored result and returning a diff with before/after values.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dns cname via nextdns: 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 record answer for the domain, a boolean 'changed' flag indicating whether results differ from the previous check (stored up to 90 days), a list of changed fields with their before and after values, and a timestamp of when the record was last seen.
Example use cases
CDN migration detection for a domain
“Keep an eye on the CNAME records for shopify-store.com via NextDNS — alert me if they change, and show me what the old and new values were so I know when our CDN migration took effect.”
Security alert on third-party CNAME hijack
“Check whether the CNAME record for app.mybrand.io has changed since the last time you looked — I'm worried about subdomain takeover and want to see a before/after diff if anything shifted.”
Scheduled DNS change verification
“Every hour, check if the CNAME for beta.acmecorp.com has changed according to NextDNS, and let me know immediately if the answer is different from what it was before, including what changed.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/cname/via/nextdns?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to detect CNAME DNS record changes over time specifically using NextDNS as the resolver (which applies security filtering), and you want a built-in diffing mechanism rather than managing your own state. Prefer it over plain DNS lookup endpoints when you need change detection with before/after field-level diffs and last-seen timestamps without building your own comparison logic.
Side effects
- Domain not found or invalid domain name returns an error
- No previous result stored (first call) may return changed=false or a baseline-only response
- NextDNS resolution failure or timeout
- Domain has no CNAME record resulting in an empty answer
- Stored state expired after 90 days, resetting the comparison baseline
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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