# Bulk WHOIS Lookup

> Bulk WHOIS Lookup is a paid API for AI agents from api.kadec0.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns registrar, registration/expiry dates, and nameservers for up to 10 domains in a single batch call.

## Facts

- Endpoint: GET https://api.kadec0.xyz/v1/whois-bulk
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bulk-whois-lookup-970adcf9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Kk8si7YOHKyb-9XhITtfR

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 bulk-whois-lookup-970adcf9
```

Example prompt: Can you do a bulk WHOIS lookup on these domains — google.com, openai.com, anthropic.com, mistral.ai, and cohere.com — and tell me who the registrar is, when each was registered, when it expires, and what nameservers they use?

## When to prefer this

Use this endpoint when you need WHOIS data (registrar, dates, nameservers) for multiple domains in one shot, avoiding the overhead of serial single-domain queries. Ideal for domain research, competitive intelligence, threat analysis, or expiry monitoring workflows where batch efficiency matters.

## Known failure modes

- More than 10 domains submitted — request rejected or truncated
- Invalid or malformed domain name in the list — that entry may return an error or null
- Domain not found in WHOIS registry — returns empty or partial record
- Rate limiting or payment failure — 402 or 429 error
- Private/redacted WHOIS records return minimal data due to GDPR privacy protection

## How this service works

Bulk WHOIS lookup. Registrar, dates, and nameservers for up to 10 domains in a single batch call.

## Output

A batch WHOIS response containing, for each queried domain: registrar name, registration date, expiry/renewal date, and nameserver records — all returned in a single API call for up to 10 domains.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domains"
     ],
     "properties": {
      "domains": {
       "type": "string",
       "description": "comma list of up to 10 domains"
      }
     }
    }
   },
   "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/bulk-whois-lookup-970adcf9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.kadec0.xyz](https://www.zero.xyz/host/api.kadec0.xyz/llms.txt)