For German end users roaming in Austria, the German version of the Katwarn app must be used, download link: https://www.katwarn.de/anmeldung-app.php
Belgium
Location-based SMS
https://www.be-alert.be
inscription is automatic as soon as a user (mobile phone) is active on the national territory, user will receive warning messages if location is within a defined area.
Belgium
Location-based SMS
https://ibz.be/nl/veiligheid#links
inscription is automatic as soon as a user (mobile phone) is active on the national territory, user will receive warning messages if location is within a defined area.
website available in dutch, french, german and english, a user can register his phone and email to receive targeted messages additional to messages of Location-based SMS system.
Bulgaria
Cell Broadcast
the system is under construction
Czechia
This emergency service is accessible to every person with a mobile device present in the targeted location at the time of broadcast. Neither application download nor user registration of any kind is required.