NEWARK, NJ - September 21, 2005 - Please join us for the IDT Corp. (NYSE: IDT and IDT.C) year-end and fourth quarter conference call when we report results for the period ended July 31, 2005, along with an update of our current financial status.

Our conference call is scheduled for Tuesday, September 27, 2005, at 8:00 AM (EDT). An earnings release will be available prior to the call.

We are pleased to offer two ways to participate in the conference call -- via teleconference or webcast. You may access the webcast of our call by visiting the IDT Corp. website (www.idt.net). A direct link to the call will be found on the IDT Corporation home page, and at the following hyperlink: http://www.b2i.us/external.asp?b=566&id=69&from=wc&L=e

You will need Windows Media software to listen to the streaming feed of the conference call. Please allow at least 15 minutes to download any necessary audio software prior to the call.

If you choose to participate via telephone, the dial-in number is 1-866-594-2183 for domestic callers, and 1-973-935-8583 for international callers. Conference ID #6522198 will speed your connection to the call.

Should you miss the call, you may access an archived copy at the IDT website (in the Investor Relations section's Presentations), or via a replay at 1-877-519-4471 - conference ID #6522198 for domestic callers, or 1-973-341-3080 - conference ID #6522198 for international callers. The teleconference replay will be available for one week after the conference call.

We look forward to your participation.

Mary Jennings

IDT Investor Relations

973-438-3124

mjenni@mail.corp.idt.net