Thanks to adsbexchange.com the old feed is (temporarily) activated again and I can show data on my site again.
As of July 19, the data is visible again.
Temporary means that the old feed has to be replaced by something else. Perhaps through the adsbexchange API.
Hopefully I can achieve the same results with that as with the old feed.
Thanks for all your messages.
ADS-B.nl is based on the excellent API from ADSBexchange. Using this API gives me the opportunity to display information in a completely different way and the planes that I find most interesting: Military planes!