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ip-listed-on-dbl-spamhaus
x402
ip-listed-on-dbl-spamhaus 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 a given IPv4 address is listed on the Spamhaus DBL DNSBL (dbl.spamhaus.org) and returns listing status, return codes, and reason text.
Price / call$0.01
Success—
StatusUnknown
How this service works
Is this IPv4 address listed on dbl spamhaus (dbl.spamhaus.org)? Performs the DNSBL query (reversed octets under dbl.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 a yes/no listing status for the queried IPv4 on dbl.spamhaus.org, along with the DNS return code(s) from the DNSBL response and, where published by Spamhaus, a human-readable reason text explaining why the IP is listed.
Example use cases
Pre-send email deliverability check
“Before we send our marketing campaign, can you check if our outbound mail server IP 198.51.100.10 is listed on Spamhaus DBL so we know if it'll get blocked?”
Inbound connection reputation screening
“We just got a connection from IP 203.0.113.77 — can you query Spamhaus DBL to see if it's blacklisted and what the return code says?”
Incident response IP investigation
“We're investigating a phishing report and the sender IP is 192.0.2.55 — look it up on the Spamhaus DBL and tell me if it's listed and why.”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/ip/blacklist/dbl-spamhaus?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a precise, single-list DNSBL check specifically against Spamhaus DBL (dbl.spamhaus.org) for an IPv4 address, want the raw return codes and reason text Spamhaus publishes, and need a cheap per-lookup ($0.01) pay-as-you-go model rather than a bulk or multi-list aggregated check.
Side effects
- Invalid or non-public IPv4 address provided (e.g. private ranges, loopback)
- DNS resolution failure via Cloudflare DoH resulting in an error response
- IP not listed returns a clean 'not listed' result with no return codes
- Malformed input causes a 4xx error
- Temporary upstream DNSBL unavailability causes lookup failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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