Download the list of .io domains

Zone	Updated	Domains
.io domains	28.04.2026 00:10 (CET) next update in 7 hours	1 194 422	Download (zip txt)
.io detailed dataset (full)	28.04.2026	1 194 422	Download (zip)
.io detailed dataset (daily update)	28.04.2026	0	Download (zip)
.io extended detailed dataset (full)	28.04.2026	1 194 422	Upgrade to ULTIMATE (zip)
.io extended detailed dataset (daily update)	28.04.2026	0	Upgrade to ULTIMATE (zip)

.io is a country code top-level domain (ccTLD), zone registry maintained by IO Top Level Domain Registry.
We have 1 194 422 available in .io zone at the time of: 28.04.2026.

Several dataset options are available, including a simple list of domains and detailed/extended detailed datasets that include email addresses, phone numbers, geodata, DNS, technologies and more. You can learn more about the dataset formats: detailed, extended detailed. You can download a list of all active domains in this zone or a list of newly registered domains only. All datasets are updated daily.

The file contains the most complete list of all registered domains in .io zone. You can download a list of all .io Internet addresses in one file in one click. Each domain is represented as a separate line in the file. We update the data in the file every day. Data is also available via API.

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