Upcoming TLDs / .stack
Can you register a .stack domain?
Source: ICANN 2026 round applications, checked October 27, 2026. Not in the IANA root zone as of October 26, 2026.
What .stack would mean
In their own words, from the public part of each application (question 118):
A stack is a set of items arranged in a vertical pile, or a combined group of technologies, tools, and layers assembled to work together toward a shared function.
A stack is a pile or arranged set and, in computing, a structured collection of technologies, components, or layers used together to build software and services.
Stack commonly refers to a broadly recognized term used across a wide range of contexts.
"Stack" is an English word meaning an orderly pile of things; in computing, a set of technologies, layers, or components used together to build and run software (as in "tech stack" or "full-stack").
Who applied for .stack
Registry Services, LLC
US, stage: Pre-Evaluation Processing
1. Describe the mission and purpose of the applied-for gTLD.
Oinkadot Inc
US, stage: Pre-Evaluation Processing
The mission of .STACK is to create a distinctive namespace for the technologies, systems, businesses, projects, and communities built by combining layers, components, tools, and ideas. In computing, a "stack" commonly describes the collection of technologies used to build and operate a product or service, while the word also has broader meanings associated with things arranged, accumulated, or working together.
Rein Check, LLC
US, stage: Pre-Evaluation Processing
The mission of .STACK is to provide a namespace associated with the applied-for string. The .STACK gTLD is intended to serve a broad range of registrants and users, including individuals, businesses, organizations, communities, projects, and other entities that identify with, relate to, or wish to be associated with the concept represented by the applied-for string.
Radix Technologies Inc SEZC
Radix Technologies Inc SEZC, KY, stage: Pre-Evaluation Processing
1. Mission and purpose: The mission of .stack is to provide a namespace rooted in one of software's most established metaphors: the stack. Intended registrants include developer-tool and infrastructure companies; engineering teams and technical publishers documenting their stacks; SaaS products and integration platforms; technical newsletters and communities; and businesses using "stack" in its broader senses. Intended users are the developers, technical buyers and readers those registrants serve worldwide. Following delegation, the applicant will, as registry operator of the .stack TLD, …
What happens next
- April 30, 2026: Application window opened (done)
- August 12, 2026: Application window closed (done)
- October 7, 2026: Reveal Day: ICANN published every applied-for string (done)
- October 21, 2026: Replacement period ended (applicants could switch to a backup string) (done)
- November 17, 2026: String Confirmation Day: the final list of applied-for strings
- March 16, 2027: Community input and objections period ends
Dates from ICANN’s Reveal Day announcement, checked October 27, 2026. We re-check the applications every day and this page changes when they do.
When will .stack be available?
ICANN has not set a date. The final list of applied-for strings comes on String Confirmation Day (November 17, 2026), community input and objections run until March 16, 2027, and ICANN processes applications after a prioritization draw in 2027. Registration opens only after ICANN delegates .stack and its registry announces launch dates.