The automatic recognition of PostNL tracking links within the Netherlands is not working (anymore?), while tracking is supported when I manually enter the tracking code and zip code that are required.
A link looks like this:
https://jouw.postnl.nl/#!/track-en-trace/3AAAAA123456789/NL/2222AA
Here, the tracking code is 3AAAAA123456789 and the zip code is 2222AA.