Exhibit 99.1JOINT FILER INFORMATION
Name: Verizon Business Network Services Inc.
Address: 22001 Loudoun County Parkway
Ashburn, VA 20147
Designated Filer: Verizon Business Network Services Inc.
Issuer & Ticker Symbol: General Communication, Inc. (GNCMA)
Date of Event Requiring Statement: March 12, 2007By: Randal S. Milch, as Secretary
/s/ RANDAL S. MILCH
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Date: March 13, 2007Name: MCI Communications Corporation
Address: 22001 Loudoun County Parkway
Ashburn, VA 20147
Designated Filer: Verizon Business Network Services Inc.
Issuer & Ticker Symbol: General Communication, Inc. (GNCMA)
Date of Event Requiring Statement: March 12, 2007By: Randal S. Milch, as Secretary
/s/ RANDAL S. MILCH
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Date: March 13, 2007Name: Verizon Business Global LLC
Address: One Verizon Way
Basking Ridge, NJ 07920
Designated Filer: Verizon Business Network Services Inc.
Issuer & Ticker Symbol: General Communication, Inc. (GNCMA)
Date of Event Requiring Statement: March 12, 2007By: Randal S. Milch, as Secretary
/s/ RANDAL S. MILCH
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Date: March 13, 2007Name: Verizon Communications Inc.
Address: 140 West Street
New York, NY
Designated Filer: Verizon Business Network Services Inc.
Issuer & Ticker Symbol: General Communication, Inc. (GNCMA)
Date of Event Requiring Statement: March 12, 2007By: Marianne Drost, as Secretary
/s/ MARIANNE DROST
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Date: March 13, 2007