List of .bio Zone Domains
.bio Domain Zone Datasets
Download a .bio domain name list or a full dataset with DNS, server IP, emails, phone numbers and registration data (all fields are listed in the FAQ).
Zone TLD: .BIO
Zone type: generic (gTLD)
Update frequency: daily (last updated on October 25, 2026)
Total domains monitored: 148,596
Live domains included in datasets: 73,526
Datasets available:
Basic Domain List (download sample 💾)
Detailed Domain Dataset (download sample 💾)
Filters: Active domains, New domains (last 24h), Deleted domains (last 24h)
| Dataset type choose a type |
Last updated next update: tomorrow |
Active domains currently registered |
New domains last 24h |
Deleted domains last 24h |
Emails from websites |
Phones from websites |
CSV |
|---|---|---|---|---|---|---|---|
| Basic Domain List | Oct 25, 2026 | 73,526 | 76 | 46 | --- | --- | Download GET |
| Detailed Domain Dataset | Oct 25, 2026 | 73,526 | 76 | --- | YES | YES | Download GET |
How many .bio domains are registered?
As of October 25, 2026, the .bio domain list contains 73,526 active .bio domains, 0.021% of all domains tracked by NetAPI, which makes .bio the #157 largest of 1,584 zones. 76 new .bio domains were registered in the last 24 hours and 3,068 over the last 30 days. Net of expired and deleted domains, the zone changed by +472 (+0.646%) in 30 days and by +17,815 (+32.0%) year over year.
The .bio domain list and the detailed dataset above are refreshed daily, so these figures move with the zone. 153 .bio domains are in the free NetAPI Top 1M. See the Top 1M list. 9 .bio domains are currently listed in the compromised domains feed (0.012% of the zone). See the TLD abuse report.
Frequently Asked Questions
See our FAQ for more answers.
Can I download sample datasets for the .bio zone?
Yes. Download a sample .bio domain list or a sample .bio dataset.
What is a basic domain list, and how does it differ from a detailed dataset?
Both cover the same 73,526 registered domain names in the .bio zone. A basic list is one domain name per line in a gzip CSV. A detailed dataset adds the nameservers, the server IP and its country, the hostname, emails and phone numbers found on the website, and, where the registry publishes them, the registration and expiration dates and the registrar. The full list of columns is in the dataset format details.
What are active and new domains?
Datasets for .bio are updated daily. Active domains are all currently registered names in the zone. New domains are names added in the last 24 hours.
Can I download only newly registered .bio domains?
Yes. The New domains list contains only the .bio domains registered in the last 24 hours and is rebuilt every day. To download it by hand, sign in and click the number in the New domains column of the download table on this page; the Download button next to it fetches the full list of active domains. Through the API, use the download method with the new filter, as described in the API documentation.
Can I download deleted .bio domains?
Yes. The Deleted domains list contains the .bio domains that were in the zone the day before and have dropped out of it, so it covers the last 24 hours and is rebuilt every day. Deleted domains are available as a list of domain names only, there is no detailed dataset for them.
A deleted domain is not necessarily free to register. The list records names that have dropped out of the .bio zone: the registration expired, or the domain was suspended or undelegated. After the expiration date a domain normally goes through a renewal grace period and a redemption period, typically 30 to 75 days depending on the zone, during which the current holder can still restore it, and only after a short pending-delete period is it released for registration. Some names return to the zone when the holder renews or a suspension is lifted, and then appear in the New domains list again.
What format and size is the file?
Every .bio domain list and dataset is a CSV file compressed with gzip (.csv.gz).
The basic list has one domain name per line. The detailed dataset has one row per domain with the additional data listed in the
dataset format details.
The current .bio files are about 308 KB (basic list)
and 1.5 MB (detailed dataset) compressed.
Any archiver opens gzip files; on Windows, for example, the free
7-Zip.
Through the API you can also download the files uncompressed (format=plain).
How do I automate daily downloads?
Schedule automatic downloads through the API. See the API documentation for authentication and endpoints.
Are emails and phone numbers available for every domain?
No. We collect contact details from public websites when available. Many domains have no published email or phone, and we do not guarantee these fields on every row. Do not use the data for unsolicited bulk outreach.
Additional .BIO Zone / Registry Information
Zone Registry: Identity Digital
Dispute Policy: link
Registry Policy: link
Data Privacy Policy: link
The domain is well suited to experts in life sciences and biotechnology, organic producers and health projects that want a distinctive identity for their research or products.
Because .bio is not saturated, a wide choice of names is still available. The extension is recognisable worldwide and not restricted to biology-related use: it can be registered by anyone, anywhere, without restrictions.
Top DNS providers / .bio domain zone
Share of .bio domains by nameserver provider. Click a provider in the legend to open its page.
Chart Y-axis is scaled to the data range to show day-to-day changes (not from zero).
Based on this dataset and daily threat-intelligence signals. Domains may be listed after observed phishing, malware, spam, botnet, or similar activity; inclusion does not imply malicious intent by the owner, registrar, registry, or host. Updated daily; figures may change as new data arrives.