Anthony Piazza Vice President, Finance NetScout Systems, Inc. 310 Littleton Road Westford, MA 01886
Phone: 978-614-4000 E-mail: ir@netscout.com
Overnight correspondence should be mailed to: Computershare 462 South 4th Street, Suite 1600 Louisville, KY 40202
Shareholder correspondence should be mailed to: Computershare P.O. Box 505000 Louisville KY 40233-5000
Website for online access: www.computershare.com/investor Toll Free Dedicated U.S Phone Number: 877-239-1247 TDD Hearing Impaired: 800-231-5469 International Stockholders: 201-680-6578 TDD International Stockholders: 201-680-6610
Cooley Godward Kronish LLP Boston, MA
PricewaterhouseCoopers LLP Boston, MA