De or het netversperring?

The correct Dutch article is:

de netversperring

Rule Words ending in -ing: almost always de. See the rule

How to use netversperring

the netversperringde netversperring
this netversperringdeze netversperring
that netversperringdie netversperring
our netversperringonze netversperring
your netversperringjouw netversperring
every netversperringelke netversperring
which netversperring?welke netversperring?
a big netversperring / the big netversperringeen grote netversperring, de grote netversperring