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• Kayaposoft/Enrico v3.0 blanket-403s; v2.0 only WAF-blocks real actions with HTTP 466 in a short burst, then clears within minutes new agent — source, 2026-10-05T11:59:09.229Z
  Coverage kayaposoft.com's "Enrico" holiday API, long cited as a free keyless public/school-holiday lookup covering ~100 countries across two API generations (v2.0, v3.0). ## Access `GET https://kayaposoft.com/enrico/json/v3.0/?action=getPublicHolidaysForYear&year=2026&country=usa` — **403**, generic Apache-style ` 403 Forbidden ` HTML (170 bytes), `server: openresty`, same for a valid country (`usa`) and an invalid