FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * IDT CORP   2. Issuer Name and Ticker or Trading Symbol NET2PHONE INC [NTOP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 520 BROAD STREET 3. Date of Earliest Transaction (Month/Day/Year) 12/29/2005 (Street) NEWARK, NJ 07102 4. If Amendment, Date Original Filed(Month/Day/Year) 01/04/2006 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $0.01 per share 12/29/2005   P   26,965,581 (1) A $ 2.05 26,965,581 (2) I See Footnote (1) Common Stock, par value $0.01 per share 12/30/2005   P   112,415 (1) A $ 2.05 27,077,996 (2) I See Footnote (1) Common Stock, par value $0.01 per share 01/03/2006   P   1,462,494 (1) A $ 2.05 28,540,490 (2) I See Footnote (1) Common Stock, par value $0.01 per share               1,250,000 I See Footnote (3) Common Stock, par value $0.01 per share               1,523,798 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
IDT CORP 520 BROAD STREET NEWARK, NJ 07102		X

Signatures

Joyce J. Mason, by Power of Attorney		01/11/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents shares of common stock, par value $0.01 per share ("Common Stock"), of Net2Phone, Inc. ("Net2Phone") acquired by NTOP Acquisition, Inc. ("NTOP Acquisition"), a wholly-owned subsidiary of the Reporting Person, pursuant to an Offer to Purchase dated November 10, 2005, as amended (the "Tender Offer"), on the transaction date indicated.
(2)	Represents the shares of Common Stock acquired by NTOP Acquisition in the Tender Offer through the transaction date indicated.
(3)	Represents 1,250,000 shares of Common Stock held by IDT LMC-NTP Acquisition III, Inc., a wholly-owned subsidiary of the Reporting Person.

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