Hmmm. Something seems to be missing.
If you go to the www.fanta.co.il domain, you get redirected to a Fanta-branded "page not found" page. Meaning that Fanta owns the Israeli Fanta domain and has decided to let it go nowhere.
Once upon a time, the domain redirected to this page, which still exists.
The Wayback Machine shows that the Fanta Israel redirect page was hacked sometime in 2012. But that part has been fixed since then.
Clearly Fanta is still sold in Israel, as you can see it noted in the Israeli Coca-Cola page. However, the link from there to its Facebook page is broken, indicating that this page was abandoned. It used to be found under facebook.com/fclubIL.
All that remains for Israeli Fanta fans is its YouTube page.
This looks like a conscious decision to abandon Fanta Israel both on the Web and on Facebook. Yet "Fanta Palestinian Territories" under the .PS top level domain is fine.
(h/t Pablo)
UPDATE: I am told that Fanta is advertising heavily in Israel. Also, at least in Israel, its Facebook page (in Hebrew) works fine; I simply cannot get to it for some reason (and I'm not aware that FB can redirect based on location.) (h/t Gidon)
It is possible that all this means is that Fanta does not have a home page for Israel - they clearly still sell there - but still it is a weird omission. Even if the page was only in English, they could have it listed.
There is no Lebanon page listed either - is it marketed there?
UPDATE 2: Answer: yes. So this just seems to indicate no country-specific page for Israel. Why that is, I have no idea. It isn't as if the Pal Territory page has any custom content that cannot be seen on other Arab pages. (same h/t)
UPDATE 3: Israel is now on the list. It points to a page that is not nearly as elaborate as the other countries' - really, a slight revamping of an old Coca Cola Israel Fanta page - and then points from there to Facebook.
Vietnam was also apparently added.
(h/t Zvi)