I'm now ONFF-218 !
Not that this is one of my interests, but I my shack is in the natural park, so why not.
Since I need also nearby countries for the 30m DXCC, this attracts stations that need a new ONFF number.
ONFF-218 is the "park des collines" situated in the "pays the collines".
Traduction to english : "Park of the hills" situated in the "land of the hills".
I must agree, this is a beautifull region plenty of nature with almost no industry.
So some protection of the nature by the authorities is a nice to have.
More info on : http://www.paysdescollines.be All in french, I can't find an english or dutch link.
As from now on, I'll put this reference on my QSL cards. I someone needs a card with this reference for on older QSO (but after 1999) just send me a mail.