批量域名可用性检查器

粘贴最多50个域名（每行一个），即时检查可用性。

输入域名（每行一个）

工作原理

粘贴您的列表

Enter up to 50 full domain names — any TLD supported. One domain per line.

DNS查询

Each domain is checked via Google DNS-over-HTTPS. NXDOMAIN means likely available; an A record means taken.

即时结果

Results stream in as each domain is checked. Available domains sort to the top automatically. Export the full list as CSV.

Always confirm with your registrar before purchasing — DNS propagation can affect results.

一次性检查多个域名

Whether you're researching brand names, building a domain portfolio, or vetting a shortlist of startup names, manually checking each domain one at a time wastes hours. This free bulk domain availability checker lets you paste up to 50 names and verify all of them in a single pass using real DNS lookups.

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常见问题

How many domains can I check at once?

You can check up to 50 domains per run. Paste one domain per line — any TLD is supported (.com, .io, .ai, .co, etc.).

How accurate is the availability check?

We use DNS lookup via Google DNS-over-HTTPS. NXDOMAIN means no DNS records exist, which strongly indicates the domain is available to register. Always confirm with your registrar before purchasing — propagation delays can occasionally affect results.

Does it support all TLDs?

Yes — enter the full domain name including the TLD (e.g. myapp.io, startup.ai). Any TLD that has RDAP support will get the full two-pass check.

Can I export the results?

Yes. After checking, click "Export CSV" to download a spreadsheet with all domains and their availability status.