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ip-listed-on-spamhaus-sbl
x402
ip-listed-on-spamhaus-sbl is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-09).
Checks whether an IPv4 address is listed on the Spamhaus SBL (Spam Block List) via DNSBL query and returns the listed status, return codes, and reason text.
Price / call$0.01
Success—
StatusUnknown
How this service works
Is this IPv4 address listed on spamhaus sbl (sbl.spamhaus.org)? Performs the DNSBL query (reversed octets under sbl.spamhaus.org, via Cloudflare DoH) and returns listed yes/no with the return codes and, where the list publishes one, the reason text. One list, one precise answer. $0.01 per lookup.
Output
Returns whether the queried IPv4 address is listed on the Spamhaus SBL (yes/no), the DNSBL return codes associated with the listing, and where available, the published reason text explaining why the IP was listed.
Example use cases
Email server reputation check
“Before I send emails from my new mail server at 203.0.113.17, can you check if it's listed on the Spamhaus SBL blacklist so I know if it'll get blocked?”
Incoming connection spam screening
“We just got a connection from 185.220.101.5 — can you look it up on the Spamhaus SBL to see if it's a known spam source and what the listing reason is?”
IP reputation audit for deliverability
“I'm troubleshooting email deliverability for 91.108.4.10 — check the Spamhaus SBL and tell me if it's listed, what return codes come back, and any reason text published for it.”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/ip/blacklist/spamhaus-sbl?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a precise, single-list Spamhaus SBL check for an IPv4 address with reason text included. It is ideal when you specifically want SBL (not XBL, PBL, or combined Zen list) results, and when you need a simple listed/not-listed answer with supporting return codes rather than a broad multi-list reputation score.
Side effects
- Invalid or non-routable IPv4 address provided (e.g. private/reserved ranges)
- DNS resolution failure via Cloudflare DoH causing lookup timeout
- IP not listed returns a clean result with listed=false and no reason text
- Rate limiting or payment failure resulting in 402 response
- Spamhaus SBL zone temporarily unavailable causing lookup error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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