Reserved CountryCode "XX" (Inbound.BalancerCountryCode) marks an inbound behind a load balancer whose exit country is unknown: the site shows a Shuffle icon with a tooltip instead of a flag, the bot shows 🔀. Admin can pick it in the publish dialog. Fits the existing column, no migration. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>