Every unregistered four-letter consonant-vowel .si name, re-checked daily at the registry, with the letter pattern on each and appraisal, search demand and footprint where we have them.
There are 11,025 possible consonant-vowel-consonant-vowel names in .si, the extension AI ventures adopted in 2026 as "SI", Super Intelligence. It is the same four-letter brandable class that sells for five figures in .com, and the class we track in .ai. 2,150 are still unregistered today. We re-check daily at the registry and keep, for each free name, its letter pattern (Western and Chinese premium letters, repeats) and, as we add them, our Engine v3 appraisal, measured search demand and the number of extensions the four letters are already registered in. Sort, filter and export the whole list. Any active plan unlocks it.
Since we started tracking on 8 Oct 2026, 1,713 names have been registered.
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