Yokan Yokan Tech
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Tech Bulletins

Numbered engineering bulletins: incident analyses, vendor-behavior findings, patches and advisories. Every bulletin is dated, citable, and written from primary evidence.

YTB-2026-0012026.11.07

Registrar nameserver changes that fail silently — and the UI that lies about itDNS

A nameserver change the control panel reported as saved never reached the registry. Why the re-rendered form proves nothing, and the sixty-second registry check that settles it.