UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1)* * This Amendment No. 1 to the undersigned Schedule 13G, which was originally filed earlier today, September 14, 2006 (the ?Schedule 13G?), by Thomas G. Kahn (the ?Reporting Person?) with regard to IDT Corp., a Delaware corporation, is being filed to correct the Schedule 13G as originally filed. The Schedule 13G as originally filed failed to indicate that the date of the share ownership reported thereon was December 31, 2005. ITEM 1 (a) Name of Issuer: IDT CORPORATION (b) Address of Issuer: 520 Broad Street Newark, NJ 07102 ITEM 2 (a) Name of Person Filing: KAHN BROTHERS & CO., INC. (b) Address of Principal Business Office: 555 Madison Avenue, 22nd Floor New York, NY 10022 (c) Citizenship: USA (d) Title of Class of Securities: COMMON (e) CUSIP Number: 448947101 ITEM 4 OWNERSHIP (a) Amount beneficially owned: 1,729,225 (b) Percent of class: 10.51% (c) Number of shares as to which the person has: (iv) Shared power to dispose to direct the disposition of: 1,729,225