SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Edidin Eric J (Last) (First) (Middle) 570 LEXINGTON AVE 40TH FLR (Street) NEW YORK NY 10022 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol ARBINET Corp [ ARBX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 12/09/2010
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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, $0.001 par value per share								22,069	D(1)
Common Stock, $0.001 par value per share	12/09/2010		P		2,722(2)	A	$7.25	533,026	I	See footnote(3)
Common Stock, $0.001 par value per share	12/09/2010		P		2,932(2)	A	$7.23	535,958	I	See footnote(3)
Common Stock, $0.001 par value per share	12/10/2010		P		5,185(2)	A	$7.51	541,143	I	See footnote(3)
Common Stock, $0.001 par value per share	12/10/2010		S		100(2)	D	$7.44	541,043	I	See footnote(3)
Common Stock, $0.001 par value per share	12/13/2010		P		791(2)	A	$7.61	541,834	I	See footnote(3)
Common Stock, $0.001 par value per share	12/15/2010		P		950(2)	A	$7.78	542,784	I	See footnote(3)
Common Stock, $0.001 par value per share	12/15/2010		P		15,201(2)	A	$7.73	557,985	I	See footnote(3)
Common Stock, $0.001 par value per share	12/15/2010		P		26,650(2)	A	$7.74	584,635	I	See footnote(3)
Common Stock, $0.001 par value per share	12/16/2010		P		651(2)	A	$7.96	585,286	I	See footnote(3)
Common Stock, $0.001 par value per share	12/16/2010		P		31,600(2)	A	$8.01	616,886	I	See footnote(3)

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person* Edidin Eric J (Last) (First) (Middle) 570 LEXINGTON AVE 40TH FLR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Lobel Joshua A. (Last) (First) (Middle) 570 LEXINGTON AVE 40TH FLR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Canton Holdings, L.L.C. (Last) (First) (Middle) 570 LEXINGTON AVE 40TH FLR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Archer Capital Management, L.P. (Last) (First) (Middle) 570 LEXINGTON AVE 40TH FLR (Street) NEW YORK NY 10022 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Mr. Eric J. Edidin directly owns 22,069 shares of common stock, $0.001 par value per share (the "Common Stock"), of Arbinet Corporation and controls the voting and disposition of such Common Stock.

2. The filing of this Form 4 shall not be construed as an admission that Messrs. Eric J. Edidin and Joshua A. Lobel, as the managers and members of Canton Holdings, L.L.C. ("Canton"), the general partner of Archer Capital Management, L.P. ("ACM"), are or were for the purposes of Section 16(a) of the Securities Exchange Act of 1934, as amended, the beneficial owners of any of the shares of Common Stock owned by any fund managed by ACM (the "Funds"). Pursuant to Rule 16a-1, Messrs. Edidin and Lobel disclaim beneficial ownership except to the extent of their pecuniary interests in the right to receive profit allocations through the general partner entities of the Funds. This transaction is made by the Funds.

3. ACM controls the voting and disposition of these shares of Common Stock held by the Funds. Canton reports such Common Stock held indirectly by ACM because, as the general partner of ACM, it controls the disposition and voting such Common Stock. Messrs. Edidin and Lobel report such Common Stock held indirectly by Canton because, as the managers and members of Canton, they ultimately control the disposition and voting of such Common Stock. ACM and Canton do not have any pecuniary interest in the Common Stock because they only receive asset-based fees from the Funds.

	/s/ Eric J. Edidin	12/17/2010
	/s/ Joshua A. Lobel	12/17/2010
	/s/ Eric J. Edidin, Manager and Member of Canton Holdings, L.L.C.	12/17/2010
	/s/ Eric J. Edidin, Manager and Member of Canton Holdings, L.L.C., the general partner of Archer Capital Management, L.P.	12/17/2010
	** Signature of Reporting Person	Date
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