We have collected data on 131,676 domains under the .BIO top-level domain (gTLD), of which 53,538 have been identified as actively registered.

Type	Updated	Number of Domains	New Domains Today
All registered .BIO domains	September 23, 2025	53,538	0
All known .BIO domains	September 23, 2025	131,676	0
Detailed .BIO domain list	September 23, 2025	53,538	0

The standard list of registered .BIO domains comprises one domain per line.

The complete list of all known .BIO domains is available in CSV format with two fields: the first is the domain name, and the second is its status (free, registered, or deleted).

Detailed domain lists include the following CSV fields, when available:

• Domain Name
• Webserver
• Request Time
• Number of HTML Elements
• Google IDs
• DNS Servers
• IP Addresses
• Crawl Date

We also provide custom crawling services should you require additional data beyond the standard information provided.