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DNS A Record Change Watch via NextDNS
x402
DNS A Record 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 DNS A record changes for a domain via NextDNS DoH, comparing the current result to the previously stored result and returning a diff with changed/unchanged status.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dns a 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 DNS A record answer for the domain, a boolean 'changed' flag indicating whether the result differs from the previous call, a list of fields that changed with before and after values, and a timestamp of when the record was last seen. Previous results are retained for 90 days.
Example use cases
Detect unexpected IP address changes
“Watch the DNS A record for api.mycompany.com via NextDNS and tell me if the IP address has changed since your last check — I want to catch any unexpected infrastructure changes.”
Security alerting for brand domain hijacking
“Check if the A record for mybrand.com has changed compared to the previous result — I'm worried about DNS hijacking and want to see before and after values if anything shifted.”
Verify CDN migration DNS cutover
“Has the A record for shop.example.com changed since the last check via NextDNS? We just migrated to a new CDN and I need to confirm the DNS cutover actually happened.”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/watch/dns/a/via/nextdns?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to detect changes in DNS A records specifically as resolved by NextDNS (useful for comparing resolver-specific behavior or monitoring in a NextDNS-filtered context), and when you want stateful change detection with before/after diffs rather than a raw one-time lookup. Prefer this over a plain DNS A lookup when your goal is change alerting, scheduled monitoring, or drift detection over time.
Side effects
- Domain not yet seen — no previous result stored, so 'changed' cannot be determined on the first call
- Domain does not exist (NXDOMAIN) — returns empty answer set
- NextDNS resolver unreachable — lookup may fail or return error
- Invalid domain input — malformed domain names will fail validation
- Payment not processed — x402 payment required before response is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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