fqdn wpml server

Hi,

I am using the constant ‘WP_HTTP_BLOCK_EXTERNAL’ in the wp-config.php
for quicker response in the backend and it works awesome quick.
i managed to almost find every mandatory needed fqdn that i need to whitelist. but with WPML i have some troubles.

some how i am not able to find the fqdn that checks the license of wpml.
so which fqdn’s do i need to whitelist if i am using WMPL?