Bulk WHOIS Lookup API — Batch Domain Registration Data

Description

Submit up to 50 domains and retrieve WHOIS/RDAP registration data for all of them. Concurrent lookups ensure fast batch processing.

Use Cases

Monitor expiration dates across a domain portfolio
Bulk registration data collection for analysis
Competitive domain intelligence at scale

Parameters

Name	Type	Required	Description
`domains`	array	Yes	List of domain names (max 50)
`format`	string	No	Response format: json or markdown

Example Request

bash

curl -X POST -H 'X-API-Key: YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"domains": ["example.com", "example.org"]}' \
  'https://api.example.com/dns/whois/bulk'

python

import httpx

resp = httpx.post(
    "https://api.example.com/dns/whois/bulk",
    headers={"X-API-Key": "YOUR_KEY"},
    json={"domains": ["example.com", "example.org"]},
)
print(resp.json())

javascript

const resp = await fetch("https://api.example.com/dns/whois/bulk", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "X-API-Key": "YOUR_KEY",
  },
  body: JSON.stringify({"domains": ["example.com", "example.org"]}),
});
const data = await resp.json();
console.log(data);

Example Response

json

{
  "results": [
    {"domain": "example.com", "registrar": "IANA", "expires": "2025-08-13"},
    {"domain": "example.org", "registrar": "IANA", "expires": "2025-08-30"}
  ],
  "total": 2
}

Bulk WHOIS Lookup

Description

Use Cases

Parameters

Related Tools in Domain

WHOIS Lookup

Domain Age Checker

Domain Availability

Bulk Domain Availability

TLD Search

Subdomain Discovery