De or het internetpeiling?

The correct Dutch article is:

de internetpeiling

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

How to use internetpeiling

the internetpeilingde internetpeiling
this internetpeilingdeze internetpeiling
that internetpeilingdie internetpeiling
our internetpeilingonze internetpeiling
your internetpeilingjouw internetpeiling
every internetpeilingelke internetpeiling
which internetpeiling?welke internetpeiling?
a big internetpeiling / the big internetpeilingeen grote internetpeiling, de grote internetpeiling