Bulk Domain Availability Checker

The Bulk Domain Availability Checker is a powerful online tool designed for webmasters, entrepreneurs, domain investors, and developers. It enables users to check the registration status of hundreds of domains simultaneously, quickly identifying which ones are still available for registration — saving significant time compared to manual one-by-one lookups.

Key Features

• Bulk Domain Checking: Input up to 200 domains at once (up to 2,000 for VIP users). The tool queries all domains concurrently for maximum speed.
• WHOIS Information Lookup: For registered domains, the tool automatically retrieves the registrar name and expiration date, giving you a complete picture of each domain's status.
• Built-in Domain Generator: Generate domain candidates using three modes — Keyword Combine, Number Suffix, and Letter Suffix. Choose from popular TLDs including .com, .net, .io, .ai, .cn, and more, then fill the checker with one click.
• Result Filtering & Sorting: Results are organized into tabs: All, Available, Taken, and Failed. Sort by domain name, status, registrar, expiry date, or query time to find what you need instantly.
• Export Results: Download available domains, taken domains, or all results as TXT (domain list) or XLSX (full details including registrar and expiry) files.

Who Is This Tool For?

• Founders and entrepreneurs searching for the perfect brand domain;
• Domain investors looking to identify and acquire unregistered domains at scale;
• Developers and product teams managing domain assets across multiple projects;
• Marketing teams that need to quickly secure campaign or brand domains.

How to Use

1. Enter one domain per line in the input box, or use the Domain Generator to create a batch of candidates automatically;
2. Click Start Check — the tool will concurrently query each domain's WHOIS status in real time;
3. Once complete, switch to the Available tab to see all unregistered domains;
4. Click Download to export your results as TXT or XLSX for further use.

Frequently Asked Questions (FAQ)

Q: How many domains can I check at once?
A: Regular users can check up to 200 domains per session. VIP users enjoy an expanded limit of 2,000 domains.

Q: How accurate are the results?
A: The tool queries domain registration status in real time via WHOIS APIs, providing accurate and up-to-date results. In rare cases, network timeouts may cause individual domains to return a "Failed" status — simply re-run those domains to verify.

Q: Which TLDs are supported?
A: Common extensions including .com, .cn, .net, .org, .io, .co, .ai, .xyz, .top, and .vip are supported by default. You can also enter any custom TLD manually.

Q: Can I export the results?
A: Yes. Export available, taken, or all domains as TXT (domain names only) or XLSX (with full details: status, registrar, expiry date, and query time).