UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549


SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No.  )*

(Name of Issuer)
IDT Corp.

(Title of Class of Securities)
Common Stock


(CUSIP Number)
448947101

Check the following box if a fee
is being paid with this statement.
 (A fee is not required only if the
filing person:  (1) has a previous statement
 on file reporting beneficial ownership
of more than five percent of the class of
securities described in Item 1; and (2) has filed
 no amendment subsequent thereto reporting beneficial
ownership of five percent or less of such class.)
 (See Rule 13d-7).

*The remainder of this cover page shall
be filled out for a reporting persons
initial filing on this form with respect
to the subject class of securities, and for
 any subsequent amendment containing information
which would alter the disclosures provided in a
 prior cover page.

The information required in the remainder
of this cover page shall not be deemed to
 be filed for the purpose of Section 18 of
 the Securities Exchange Act of 1934 (Act)
or otherwise subject to the liabilities of that
 section of the Act but shall be subject to all
 other provisions of the Act
(however, see the Notes).


1  NAME OF REPORTING PERSON   S.S. OR I.R.S. IDENTIFICATION NO. OF PERSON
	THOMSON HORSTMANN & BRYANT, INC.
	22-3508647

2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
	N/A

3  SEC USE ONLY

4  CITIZENSHIP OR PLACE OF ORGANIZATION
	A DELAWARE CORPORATION
	SADDLE BROOK, NJ  07663

5  SOLE VOTING POWER
	603,800

6  SHARED VOTING POWER
	27,000

7  SOLE DISPOSITIVE POWER
	1,199,500

8  SHARED DISPOSITIVE POWER
	NONE

9  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	1,199,500

10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
	N/A

11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
	5.15%

12  TYPE OF REPORTING PERSON *
	IA

ITEM 1.
	(A) IDT CORP.
	(B) 520 BROAD ST., NEWARK, NJ 07102

ITEM 2.
	(A) THOMSON HORSTMANN & BRYANT, INC.
	(B) PARK 80 WEST, PLAZA TWO, SADDLE BROOK, NJ 07663
	(C) A DELAWARE CORPORATION
	(D) COMMON
	(E) 448947101

ITEM 3.
	(E) INVESTMENT ADVISER REGISTERED
 UNDER SECTION 203 OF THE INVESTMENT
		    ADVISERS ACT OF 1940

ITEM 4.
	(A)  1,199,500
	(B)  5.15%
	(C)	(I)	603,800
		(II)	27,000
		(III)	1,199,500
		(IV)	NONE

ITEM 5.  N/A

ITEM 6.  N/A

ITEM 7.  N/A

ITEM 8.  N/A

ITEM 9.  N/A


ITEM 10. CERTIFICATION
	By signing below I certify that,
 to the best of my knowledge and belief,
the securities referred to above were
acquired in the ordinary course of business
 and were not acquired for the purpose of and
 do not have the effect of changing or influencing
 the control of the issuer of such securities
 and were not acquired in connection with or
 as a participant in any transaction having such
 purposes or effect.

SIGNATURE

After reasonable inquiry and to the best
 of my knowledge and belief, I certify that
the information set forth in this statement
is true, complete and correct.

							Richard A. Horstmann, VP
							Date:   1/18/02