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Investor Relations

Contacts

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Vonage Investor Relations Contact Information

Vonage Investor Relations
23 Main Street
Holmdel, NJ 07733

http://ir.vonage.com
732.365.1328


Stock Transfer Agent Information

If you are a registered stockholder and have questions regarding your holdings or if there are any changes to be made to the account (mailing address, account name), please contact the Company's transfer agent, American Stock Transfer & Trust Company, at the following:

American Stock Transfer & Trust Company
c/o Vonage Holdings Corp.
59 Maiden Lane
Plaza Level
New York, NY 10038

Phone: (800) 937-5449 or (718) 921-8124 (for international callers)

Visit their website at http://www.amstock.com.

If you own stock through a brokerage account, contact your broker who is responsible for your account.