Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Board of Directors and Stockholders
Vonage Holdings Corp.
Holmdel, New Jersey
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated April 16, 2007, relating to the consolidated financial statements and financial statement schedules of Vonage Holdings Corp., appearing in the Annual Report on Form 10-K of Vonage Holdings Corp., for the year ended December 31, 2006 and to the reference to us under the heading “Experts” which is part of this Registration Statement.
/s/ BDO Seidman, LLP
Woodbridge, New Jersey
July 20, 2007