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Form SC 13G/A COGENT COMMUNICATIONS Filed by: BlackRock, Inc.
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Form SC 13G/A COGENT COMMUNICATIONS Filed by: RENAISSANCE TECHNOLOGIES LLC
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Form SC 13G/A COGENT COMMUNICATIONS Filed by: BlackRock Inc.
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Form SC 13G/A COGENT COMMUNICATIONS Filed by: BlackRock Inc.
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Form SC 13G/A COGENT COMMUNICATIONS Filed by: FMR LLC
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Form SC 13G/A COGENT COMMUNICATIONS Filed by: FRONTIER CAPITAL MANAGEMENT CO LLC
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Form SC 13G/A COGENT COMMUNICATIONS Filed by: Sarbit Advisory Services Inc.
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