How To Guides

How to Get Bulk WHOIS Data for Domain Portfolio Research

Learn how to download WHOIS registration data for thousands of domains at once using WhoisExtractor's database products and API, and use it for lead generation, compliance monitoring, and competitive research.

How to Get Bulk WHOIS Data for Domain Portfolio Research
How To Guides April 11, 2026 3 min read WhoisExtractor Team

What Is Bulk WHOIS Data?

When you need registration details - registrant contact, registrar, creation date, expiry date, and nameservers - for thousands of domains, querying them one at a time is impractical. WhoisExtractor solves this by delivering pre-collected, structured WHOIS databases as ready-to-use CSV files.

You get all the records at once: download the CSV directly from your dashboard, or pull the file automatically via the API each day. No scraping, no per-domain queries.

If you just need to check a single domain, use the free WHOIS Lookup Tool instead.

When to Use the WHOIS Database

Lead generation - Get registrant emails and phone numbers from newly registered domains in your target niche.

Expiry and ownership research - Understand registration patterns, registrar distribution, and expiry timelines across large domain sets.

Compliance screening - Verify registrant ownership across large domain lists for regulatory or legal due diligence.

Brand protection - Monitor for domains that contain your trademark in the daily new-registration feeds.

The Three Database Products

WhoisExtractor offers three databases, each covering a different type of data:

Database What you get Best for
WHOIS Database Registrant name, email, phone, address, registrar, dates Contact data, lead generation
Domains Database Domain names, TLDs, registration dates - no WHOIS contacts Discovery, daily domain feeds
Website Database Emails & phones extracted from live websites B2B sales, lead generation

Most customers subscribe to two or more for different stages of their research workflow.

Step-by-Step: Downloading WHOIS Data

1. Choose your plan

Visit the WHOIS Database page and select the plan that fits your volume - Global daily feed, a country pack (e.g. India, US, Australia), or the archived historical dataset.

2. Download from your dashboard

Once your payment confirms, your files are available instantly in the dashboard. Each file is a structured CSV - ready to open in Excel, import into a CRM, or load into a database.

3. Automate with the API

For daily automated delivery, use the API. Send a single GET request with your API key and product ID - the file download starts immediately:

curl "https://get.whoisextractor.com/?api=YOUR_API_KEY&pid=3&date=2026-04-11" \
  --output whois-2026-04-11.zip

The pid parameter selects the database:

pid Product
1 India WHOIS Database
7 US WHOIS Database
8 Australia WHOIS Database
3 Daily Full WHOIS Database (global)
10 Daily Registered Domains (API)
11 Website Detailed Daily Data

Data is refreshed once per day at 6:00 AM IST. You can go up to 4 days back using the date parameter.

4. Work with the downloaded data

Unzip the file and open the CSV. Each row is one domain record with 20+ columns including nameservers, registrar, expiry date, address, and more.

Import directly into Excel, any CRM, or your own database for filtering, segmenting, and outreach.

Next Steps

  • Read the full API documentation for all product IDs, parameters, and code examples
  • Contact support if you have questions about volume or specific country datasets

Domain data platform

WHOIS, Domain & Website Data

Download structured databases - domain registrations, WHOIS contacts, and website leads. Three databases. Nine plans. Updated daily.

WhoisExtractor Team

WhoisExtractor

Experts in domain intelligence, WHOIS databases, and website lead data for marketers, agencies, and domain investors.