diff --git a/config/initializers/cors.rb b/config/initializers/cors.rb
index b15ace36..812a11e4 100644
--- a/config/initializers/cors.rb
+++ b/config/initializers/cors.rb
@@ -28,8 +28,10 @@ Rails.application.config.middleware.insert_before 0, Rack::Cors do
       # Cacheamos la respuesta para no tener que volver a procesarla
       # cada vez.
       Rails.cache.fetch(source, expires_in: 1.hour) do
-        if (name = URI(source)&.host&.split('.', 2)&.first).present?
-          Site.where(name: name).pluck(:name).first.present?
+        uri = URI(source)
+
+        if (name = uri&.host&.split('.', 2)&.first).present?
+          Site.where(name: [name, uri.host + '.']).pluck(:name).first.present?
         else
           false
         end