De or het beetregistratie?

The correct Dutch article is:

de beetregistratie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use beetregistratie

the beetregistratiede beetregistratie
this beetregistratiedeze beetregistratie
that beetregistratiedie beetregistratie
our beetregistratieonze beetregistratie
your beetregistratiejouw beetregistratie
every beetregistratieelke beetregistratie
which beetregistratie?welke beetregistratie?
a big beetregistratie / the big beetregistratieeen grote beetregistratie, de grote beetregistratie