# IP Listed on SORBS Spam DNSBL

> IP Listed on SORBS Spam DNSBL 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 a given IPv4 address is listed on the SORBS spam blacklist (spam.dnsbl.sorbs.net) via DNS-based blocklist (DNSBL) lookup using Cloudflare DoH.

## Facts

- Endpoint: GET https://ip.intel.rallylive.ca/ip/blacklist/sorbs-spam?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ip-listed-on-sorbs-spam-dnsbl-c7a6b427
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ly2J5ayLu3Tq_LMaK_3vC

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ip-listed-on-sorbs-spam-dnsbl-c7a6b427
```

Example prompt: Can you check if the IP address 203.0.113.42 is listed on the SORBS spam blacklist and tell me the return code and any reason text?

## When to prefer this

Choose this endpoint when you need a fast, single-list, authoritative answer about whether a specific IPv4 address is on the SORBS spam blacklist specifically. Prefer it over multi-list aggregators when you want deterministic, traceable results from one source with return codes and reason text, especially in automated email filtering pipelines, abuse investigation workflows, or reputation scoring systems that need SORBS spam data specifically.

## Known failure modes

- Invalid or non-routable IPv4 address returns an error or not-listed result
- Cloudflare DoH upstream timeout causes lookup failure
- IPv6 addresses not supported — endpoint is IPv4-only
- IP not listed returns a clean negative result with no reason text
- Payment failure (x402) blocks the request before lookup occurs

## How this service works

Is this IPv4 address listed on sorbs spam (spam.dnsbl.sorbs.net)? Performs the DNSBL query (reversed octets under spam.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 indicating whether the IPv4 address is listed on the SORBS spam DNSBL (spam.dnsbl.sorbs.net), along with the raw DNSBL return codes and, when the list provides it, a human-readable reason text explaining the listing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ip-listed-on-sorbs-spam-dnsbl-c7a6b427/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ip.intel.rallylive.ca](https://www.zero.xyz/host/ip.intel.rallylive.ca/llms.txt)