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17711 IP Blocklist Check
x402
17711 IP Blocklist Check is a paid API for AI agents from api.17711.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).
Checks a single IPv4 address against a merged index of major public IP blocklists (FireHOL, Spamhaus, Tor exit nodes, Feodo, Talos) and returns whether it is banned and which lists matched.
Price / call$0.01
Success—
StatusUnknown
How this service works
IP reputation check: is this IPv4 address on a public threat blocklist (Tor exit nodes, botnets, spam networks)
Output
A JSON object containing the queried IP address, a boolean 'banned' field indicating whether the IP appears on any list, and a 'matches' array where each entry has the matching CIDR range and the name of the blocklist source that flagged it (e.g. FireHOL, Spamhaus, Tor-exit, Feodo, Talos). If the IP is clean, 'banned' is false and 'matches' is empty.
Example use cases
Block malicious signup traffic
“Before I create an account for this user, check if their IP 198.51.100.22 is on any major blocklists like Spamhaus or Feodo — I want to reject signups from flagged IPs.”
Investigate suspicious server connection
“Someone from IP 45.83.64.1 just tried to connect to our API — can you check if that address appears on FireHOL, Talos, or any Tor exit node list?”
Email sender reputation screening
“I'm getting email from a server at IP 91.108.4.13 and I want to know if it's listed as a spam source on Spamhaus or any other public blocklist before I trust it.”
Technical details
Endpoint
GEThttps://api.17711.xyz/registry/ip-blocklist/v1/ip-blocklist/check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, multi-source IP reputation check against well-known public blocklists (FireHOL, Spamhaus, Tor exit, Feodo, Talos) in a single call, without maintaining your own threat-feed subscriptions. It is priced per-call at $0.002 USDC via x402, making it suitable for on-demand spot-checks in agent workflows. Prefer it over building your own blocklist aggregation or calling each feed separately. Not ideal for bulk batch lookups or for IPv6 addresses.
Side effects
- Invalid or malformed IPv4 address returns a validation error
- IPv6 addresses are not supported and will fail
- Free quota exhausted returns HTTP 402 with payment challenge requiring USDC payment via x402
- Rate limiting if the shared free tier is exhausted
- Network timeouts if upstream blocklist index is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"ip": "string",
"banned": false,
"matches": [
{
"cidr": "string",
"source": "string"
}
]
}Tags
x402
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