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WHOIS Lookup Change Watch
x402
WHOIS Lookup Change Watch is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Runs a WHOIS/RDAP domain registration lookup and compares it against the previous result (stored 90 days) to detect and report exactly which fields changed, with before/after values.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for whois lookup: runs the check and compares it with the result from your previous call for the same domain (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when whois / rdap domain registration lookup changes. $0.01 per check.
Output
Returns the current full WHOIS/RDAP lookup result for the domain, a boolean 'changed' flag indicating whether anything differs from the previous call, a detailed list of which specific fields changed with their before and after values, and the timestamp of when the previous state was last seen. The previous result is retained for 90 days.
Example use cases
Domain hijacking early warning
“Watch the WHOIS record for mybrand.com and alert me immediately if the registrar, registrant name, or nameservers change — I want to catch any unauthorized transfers as soon as they happen.”
Competitor domain acquisition tracking
“Check the WHOIS for competitor-domain.com on a schedule and tell me whenever anything in the registration changes, especially if the owner or status flips — show me the old vs new values.”
Expired domain renewal monitoring
“Monitor the WHOIS expiry date for clientsite.net every day and notify me the moment the expiration date or domain status updates, with a before and after comparison.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/watch/whoisWhen to prefer
Choose this endpoint when you need to detect changes in domain registration data over time rather than just performing a one-off WHOIS lookup. It is ideal for scheduled monitoring workflows where you want automatic diffing with before/after field-level comparison rather than manually comparing two separate lookup results. It stores state server-side for 90 days, eliminating the need to manage your own snapshot storage. Prefer it over a plain WHOIS lookup endpoint when the goal is change detection, alerting, or audit logging of domain registration history.
Side effects
- Domain not found or unregistered — WHOIS lookup returns empty or NXDOMAIN response
- No previous result stored — first call for a domain returns current data with changed=false and no diff
- Previous result expired (older than 90 days) — treated as first call, no comparison available
- RDAP/WHOIS service unavailability for the queried TLD — upstream timeout or error returned
- Invalid domain format supplied — request fails with a validation error
- Rate limiting or upstream throttling by the WHOIS registry — partial or delayed results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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