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ip-listed-on-rbl-jp
x402
ip-listed-on-rbl-jp is a paid API for AI agents from ip.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Checks whether an IPv4 address is listed on the rbl.jp DNSBL (all.rbl.jp) and returns listed status, return codes, and reason text
Price / call$0.01
Success—
StatusUnknown
How this service works
Is this IPv4 address listed on rbl jp (all.rbl.jp)? Performs the DNSBL query (reversed octets under all.rbl.jp, 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 all.rbl.jp, the DNSBL return/response codes indicating the listing category, and where available the human-readable reason text explaining why the IP was listed.
Example use cases
Email server deliverability check
“Before I send a marketing campaign, can you check whether my mail server's IP 198.51.100.25 is listed on rbl.jp? I need to know if it's flagged and what the reason code says.”
Spam complaint investigation
“A customer reported getting spam from IP 203.0.113.77 — can you check if that address is listed on the rbl.jp DNSBL and show me the return code and reason?”
Inbound email sender reputation
“I'm seeing suspicious emails from 192.0.2.10 — is that IP on rbl.jp's blocklist? Tell me the listed status and any reason text they publish.”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/ip/blacklist/rbl-jp?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to check an IPv4 address against the rbl.jp (all.rbl.jp) DNSBL — a Japanese-operated blocklist. Prefer this over generic multi-list tools when you need a single, precise answer with the exact return code and reason from this specific list, particularly for email deliverability checks targeting Japanese mail infrastructure or when diagnosing rbl.jp-specific rejections.
Side effects
- Invalid or non-routable IPv4 address returns an error
- DNS resolution failure via Cloudflare DoH results in lookup error
- IPv6 addresses are not supported (IPv4 only)
- IP not listed returns a clean negative result with no reason text
- Transient DNS timeout may cause lookup failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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