> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.taxx.lu/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# What is the address of the Centre Commun de la Sécurité Sociale (CCSS) for administrative formalities?

All your requests concerning affiliation, contributions or social security certificates can be sent to :

Centre Commun de la Sécurité Sociale (CCSS)
125, route d'Esch
L-1471 Luxembourg