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The .io timeline.

Sep 16, 1997
IANA registration
Event details
Precision
date
Time zone
Not specified
Source label
Registration date
Checked
Oct 14, 2026
Original source

BreadcrumbHome.ioLaunch history

.io

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Questions

Which .io launch phases and dates are shown?

The current result includes IANA registration starting September 16, 1997.

Published launch source

When did .io reach documented general availability?

No general-availability event is included in the current result. Other launch records do not establish a public-registration date.

Can a sunrise or IANA date establish who could register?

No. A sunrise date describes a particular phase, and IANA registration is separate from delegation and commercial availability. Use the source linked with the event for its published conditions.

TLD Wiki: .io launch dates & timeline