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SiteCheck Web Intel – Blocklist.de IP Check
x402
SiteCheck Web Intel – Blocklist.de IP Check is a paid API for AI agents from api.webintel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).
Checks whether a given IPv4 address appears on the Blocklist.de 'all' list of IPs recently reported for attacks such as brute-force logins, SSH abuse, and mail abuse (~24,000 addresses).
Price / call$0.002
Success—
StatusUnknown
How this service works
Checks an IPv4 address against the Blocklist.de 'all' list of IPs reported for attacks such as failed logins, SSH and mail abuse (about 24,000 addresses). A hit means it was reported recently; the list keeps only current reports.
Output
Returns whether the queried IPv4 address appears on the Blocklist.de 'all' list, indicating whether it has been recently reported for attacks such as failed logins, SSH abuse, or mail abuse. The list is current and rotates out older entries, so a hit means a recent report.
Example use cases
Block suspicious login attempt
“Someone just tried to log into our server from 45.33.32.156 — can you check if that IP is on any abuse blocklist, specifically Blocklist.de, to see if it's a known attacker?”
Firewall rule vetting
“Before I whitelist 198.51.100.23 in our firewall, can you verify whether it's flagged on Blocklist.de for any recent attacks like SSH abuse or brute-force logins?”
Incoming email sender check
“We're getting a lot of email from 91.121.87.143 and I'm suspicious — can you check if that IP has been reported for mail abuse on Blocklist.de?”
Technical details
Endpoint
GEThttps://api.webintel-api.workers.dev/api/security/blocklist-de?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, low-cost check of whether a specific IPv4 address has been recently reported for attacks on Blocklist.de — particularly SSH brute force, failed logins, or mail abuse. Prefer this over broader threat intel APIs when you specifically want Blocklist.de's community-reported current offenders list, not historical WHOIS or passive scan data. Best suited for real-time gatekeeping of inbound connections or email senders.
Side effects
- Missing or invalid 'ip' query parameter returns an error
- Non-IPv4 input (e.g. IPv6 or hostname) may not be supported
- IP not found on list does not necessarily mean it is safe — absence only means no recent report
- Blocklist.de data may lag by hours; very recent abusers may not yet appear
- Rate limiting or upstream Blocklist.de unavailability could cause transient failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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