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DNSBL Check Change Watch
x402
DNSBL Check 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).
Monitors an IP address against DNS blacklists, returning the current result plus a diff (changed/unchanged, before/after field values) compared to the previous check stored for 90 days.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for dnsbl check: runs the check and compares it with the result from your previous call for the same ip (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 ip blacklist changes. $0.01 per check.
Output
Returns the current DNS blacklist check result for the IP, a boolean 'changed' flag indicating whether anything differs from the previous call, a detailed diff showing exactly which fields changed with before and after values, and the timestamp of when the IP was last seen — with prior results retained for 90 days.
Example use cases
Mail server deliverability monitoring
“My mail server is at 198.51.100.10 — check its DNS blacklist status and tell me if it's changed at all since the last check, so I know immediately if it gets listed somewhere new.”
Alerting on newly blacklisted customer IPs
“I want to watch IP 192.0.2.55 for any DNSBL changes; run the blacklist check against our last stored result and flag exactly which fields are different so I can investigate suspicious activity.”
Verifying successful IP delisting
“We just got 203.0.113.99 removed from a blacklist — can you run the DNSBL change watch on it and confirm whether the status has actually changed compared to the previous check?”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/watch/dns/blacklistWhen to prefer
Choose this endpoint when you need to detect changes in an IP's DNS blacklist status over time rather than just a one-time snapshot. It is ideal for scheduled monitoring agents, deliverability pipelines, or security workflows where you need to know precisely when and how blacklist status changed, with before/after field-level diffs, rather than re-implementing your own diffing logic.
Side effects
- Missing or invalid IP address parameter returns an error
- IP not previously checked — no baseline stored yet, so no diff is available on first call
- Results older than 90 days are purged, resetting the comparison baseline
- Network timeouts reaching upstream DNSBL providers
- Malformed query parameters return a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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