# dnsbl-check-bulk

> dnsbl-check-bulk is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Checks up to 20 IP addresses against DNS blacklists (DNSBL) in a single concurrent batch call, returning per-item results in input order.

## Facts

- Endpoint: GET https://intel.rallylive.ca/bulk/dns/blacklist
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dnsbl-check-bulk-c27ef4a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7AW1Rvp2yxbZfUuHRwmc0

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 dnsbl-check-bulk-c27ef4a4
```

Example prompt: Can you check all 15 IPs in my list against DNS blacklists at once and tell me which ones are flagged and how many failed?

## When to prefer this

Choose this endpoint when you have a list of 2–20 IP addresses to check against DNS blacklists and want to minimize latency and API calls via concurrent processing. It is more cost-efficient than calling the single /dns/blacklist endpoint repeatedly. Prefer it for batch enrichment workflows, pre-send email IP audits, or bulk threat intelligence pipelines where ordered, per-item results with error isolation are required.

## Known failure modes

- Input list exceeds 20 IPs — batch size limit exceeded
- Invalid IP address format causes per-item error for that entry
- DNS resolution timeout for specific IPs returns per-item error
- Payment not completed — x402 payment required error
- All items fail — high failure count returned with per-item errors
- Malformed query parameter causes full request rejection

## How this service works

Bulk dnsbl check: up to 20 ips in one call, processed concurrently, results returned in input order with a per-item error field and a count of failures. Same answer per item as the single /dns/blacklist endpoint (IP blacklist). Batch enrichment for agents that hold a list. $0.01 per batch.

## Output

Returns an ordered array of DNSBL check results matching the input IP list, with each item containing the same fields as the single /dns/blacklist endpoint (blacklist status, listing details), plus a per-item error field for failed lookups and a top-level count of failures across the batch.

## 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/dnsbl-check-bulk-c27ef4a4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)