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ADTRAN, Inc.International Department901 Explorer BoulevardHuntsville, Alabama 35806 USAU.S. Headquarters+1 256 963 8000[email protected]International Customer Service+1 256 963 8716
Canada—Montreal, Quebec[email protected]
Mexico/Central America[email protected]
Australia/New Zealand[email protected]
Headquarters—ADTRAN GmbHBerlin, Germany[email protected]
Middle East and Africa[email protected]