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ip-listed-on-sorbs
x402
ip-listed-on-sorbs 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 SORBS DNSBL (dnsbl.sorbs.net) 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 sorbs (dnsbl.sorbs.net)? Performs the DNSBL query (reversed octets under dnsbl.sorbs.net, 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 indicator of whether the IPv4 address is listed on SORBS (dnsbl.sorbs.net), along with the DNS return codes from the DNSBL query and, where published by SORBS, a human-readable reason text explaining the listing category (e.g. spam source, open proxy, zombie).
Example use cases
Pre-send email deliverability check
“Before I send this bulk email campaign, check if my mail server's IP 203.0.113.10 is listed on SORBS so I know if it'll get blocked.”
Investigating suspicious inbound connection
“We're getting weird traffic from 91.108.4.33 — can you check if that IP is on the SORBS blacklist and what category it's flagged under?”
Validating a new hosting IP for clean reputation
“I just got assigned IP 198.51.100.77 for my new server — is it listed on SORBS and does it have any reason text explaining why?”
Technical details
Endpoint
GEThttps://ip.intel.rallylive.ca/ip/blacklist/sorbs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a precise, single-list DNSBL check specifically against SORBS (dnsbl.sorbs.net) rather than an aggregated multi-list score. Ideal for email security pipelines, spam filter automation, or IP reputation enrichment where SORBS listing status is the specific signal required. Prefer this over generic IP reputation APIs when you need the raw SORBS return codes and reason text rather than a composite score.
Side effects
- IP address not provided or malformed — query fails with input validation error
- DNS resolution failure via Cloudflare DoH — upstream timeout or error
- IP not listed — returns listed: false with no return codes or reason
- SORBS DNSBL temporarily unavailable — upstream DNS error returned
- IPv6 address provided instead of IPv4 — not supported by this endpoint
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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