It is easy to contact several Orange Prisoners of Zion at the Ayalon and Massiyahu Prisons through their shared voice mail box:
After the music, menu, and beep, press the following numbers for the "residents," as the outgoing message says:
0 - Ofer ?? 1 - Aryeh Tessler 2 - Yitzhaq Ohayon
3 - Yehudah Ovadiah 4 - David ?? 5 - Gilad Pollack
6 - Eliyashiv Gilbar 7 - Shlomi Dvir
The tape wasn't great. So, if anyone can hear the two names I missed, please list here in a comment below.
Also, it's still not too late to call Gilad Pollack, and wish him a Happy Birthday.