List of .rio Zone Domains
.rio Domain Zone Datasets
Download a .rio 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: .RIO
Zone type: generic (gTLD)
Update frequency: daily (last updated on October 27, 2026)
Total domains monitored: 931
Live domains included in datasets: 691
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: today |
Active domains currently registered |
New domains last 24h |
Deleted domains last 24h |
Emails from websites |
Phones from websites |
CSV |
|---|---|---|---|---|---|---|---|
| Basic Domain List | Oct 27, 2026 | 691 | 1 | 1 | --- | --- | Download GET |
| Detailed Domain Dataset | Oct 27, 2026 | 691 | 1 | --- | YES | YES | Download GET |
How many .rio domains are registered?
As of October 27, 2026, the .rio domain list contains 691 active .rio domains, <0.001% of all domains tracked by NetAPI, which makes .rio the #780 largest of 1,584 zones. 1 new .rio domains were registered in the last 24 hours and 15 over the last 30 days. Net of expired and deleted domains, the zone changed by −73 (−9.55%) in 30 days and by −5 (−0.718%) year over year.
The .rio domain list and the detailed dataset above are refreshed daily, so these figures move with the zone. 16 .rio domains are in the free NetAPI Top 1M. See the Top 1M list.
Frequently Asked Questions
See our FAQ for more answers.
Can I download sample datasets for the .rio zone?
Yes. Download a sample .rio domain list or a sample .rio dataset.
What is a basic domain list, and how does it differ from a detailed dataset?
Both cover the same 691 registered domain names in the .rio 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 .rio 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 .rio domains?
Yes. The New domains list contains only the .rio 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 .rio domains?
Yes. The Deleted domains list contains the .rio 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 .rio 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 .rio 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 .rio files are about 4 KB (basic list)
and 20 KB (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 .RIO Zone / Registry Information
Registration is open to anyone worldwide, although the extension is intended for businesses, organisations, events and residents connected to Rio; the city administration and local companies use it for regional branding.
Top DNS providers / .rio domain zone
Share of .rio domains by nameserver provider. Click a provider in the legend to open its page.