What is WhoisExtractor?

WhoisExtractor is a data platform that collects, processes, and delivers domain registration (WHOIS), domain list, and website contact data. We have been operating since 2015, processing over 319 million domain records. Our data is used by marketers, agencies, developers, and researchers for lead generation, competitive research, and business intelligence.

What data do you provide?

We provide three main datasets: Domains Database (lists of domain names by TLD), WHOIS Database (registration ownership and contact details), and Website Database (emails, phone numbers, and business details scraped from live websites). All datasets are available as daily feeds or full historical archives.

How current is your data?

Our daily feeds are updated every 24 hours. We collect newly registered domains, updated WHOIS records, and fresh website data continuously. Full historical archives go back several years and are constantly growing.

WHOIS is a public registry of domain name registrations maintained by ICANN and domain registries worldwide. It contains the registrant name, email address, phone number, organization, registration date, expiry date, registrar, and name servers for each registered domain. WhoisExtractor collects and delivers this data in clean, structured CSV format.

What is the Website Database?

The Website Database is built by crawling live websites and extracting publicly available contact information - emails, phone numbers, social media links, business names, and more. Unlike WHOIS, which shows domain ownership, the Website Database shows the actual business operating at the domain. This makes it ideal for lead generation campaigns.

How is the data collected?

We collect data from multiple verified sources: public WHOIS records via ICANN-compliant lookups, domain zone files from registries, and web crawls of publicly accessible websites. All data collection is performed in accordance with applicable laws and the data sources' terms of service.

Can I use this data for marketing and lead generation?

Yes. Our data is widely used for cold email outreach, B2B lead generation, domain investor prospecting, and market research. The Website Database is especially suited for generating targeted contact lists. Please ensure your use complies with applicable laws (CAN-SPAM, GDPR, etc.) and that recipients have a legitimate basis for contact.

Used by marketers, agencies, and developers worldwide

Frequently Asked Questions

Find answers about our domain, WHOIS, and website data - including access, API usage, and plans.

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Most Asked

General Questions

Data & Usage

pricing page to compare plans.', ], [ 'question' => 'Do you provide real emails and phone numbers?', 'answer' => 'Yes. The Website Database provides emails and phone numbers extracted from live websites. The WHOIS Database also contains registrant emails and phone numbers. Both are available on their respective paid plans. These are real, publicly listed contact details.', ], ]" />

Refund Policy. If you are not satisfied with your purchase, please open a support ticket within 7 days of your order and our team will review your request.', ], [ 'question' => 'Are plans one-time purchases or subscriptions?', 'answer' => 'Both options are available depending on the product. Some datasets are sold as one-time purchases for a specific date range or archive, while daily feed plans operate on a subscription basis. Plan details are clearly shown on the pricing page.', ], ]" />

API documentation page.', ], [ 'question' => 'What format is the data available in?', 'answer' => 'Data is delivered as CSV files inside a ZIP archive. Each row is one domain record. CSV files work directly with Excel, Google Sheets, Python (pandas), and database import tools. Only error responses from the API return JSON - successful requests deliver the file directly.', ], [ 'question' => 'How large are the data files?', 'answer' => 'File sizes vary by dataset and date range. A typical daily domain feed CSV is between 50 MB and 500 MB compressed. Full historical archives can be several GB. We recommend downloading to a server or using our API for automated ingestion rather than a personal computer.', ], [ 'question' => 'Can I integrate the data with my own system or CRM?', 'answer' => 'Yes. The API and CSV format make it straightforward to integrate with any CRM, database, data pipeline, or marketing tool. We provide documentation and example scripts. If you need a custom integration, our support team can advise.', ], ]" />

Still Have Questions?

Our support team responds within 24 hours. We're here to help.

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