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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(Print or Type Responses)

1. Name and Address of Reporting Person * LIBERTY MEDIA CORP /DE/   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) 12300 LIBERTY BLVD. 3. Date of Earliest Transaction (Month/Day/Year) 03/08/2005 (Street) ENGLEWOOD, CO 80112 4. If Amendment, Date Original Filed(Month/Day/Year) 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 03/08/2005   J(1)(2)   1,250,000 D (3) 0 (1) (2) I By majority-owned subsidiary (1)

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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
LIBERTY MEDIA CORP /DE/ 12300 LIBERTY BLVD. ENGLEWOOD, CO 80112		X

Signatures

By: /s/ Charles Y. Tanabe, Senior Vice President		03/10/2005
**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)	The Reporting Person is filing this Form 4 as a result of the closing of the following transactions on March 8, 2005, pursuant to the Agreement and Plan of Merger, dated as of December 15, 2004, among LMC Animal Planet, Inc., a Colorado corporation and controlled subsidiary of the Reporting Person ("LMC Animal Planet"), IDT Corporation, a Delaware corporation ("IDT"), and certain of their subsidiaries: (a) LMC Animal Planet disposed of 1,250,000 shares of the Issuer's Common Stock, par value $0.01 per share, held by a wholly owned subsidiary of LMC Animal Planet prior to the closing, and (b) LMC Animal Planet disposed of non-controlling membership interests in NTOP Holdings, L.L.C., a Delaware limited liability company ("NTOP"), held by wholly owned subsidiaries of LMC Animal Planet prior to the closing. NTOP owns 28,896,750 shares of the Issuer's Class A Common Stock, par value $0.01 per share.
(2)	The Reporting Person, on behalf of itself and each of its subsidiaries, disclaims beneficial ownership of the securities held by NTOP referenced in Note 1 above, and the filing of this statement shall not be deemed an admission that the Reporting Person or any of its subsidiaries has beneficially owned any of the securities covered by this statement for purposes of Section 16 or any other purpose. The Reporting Person, on behalf of itself and each of its subsidiaries, disclaims membership in any group with any other members of NTOP or any other person with respect to such securities.
(3)	LMC Animal Planet received an aggregate of 3,754,479 shares of IDT's Class B Common Stock, par value $0.01 per share, as consideration for the transactions referenced in Note 1 above.

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