As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

  3/8/06  Weed Thaddeus Gerard              4          Officer²    1:7K   Cogent Comms Holdings, Inc.       CT EDGAR123/FA           
  3/7/06‡ Cogent Comms Holdings, Inc.       8-K:2,9      3/6/06    2:221K                                   Donnelley Fi… Express/FA 
  3/6/06‡ Cogent Comms Holdings, Inc.       8-A12G       3/3/06    1:29K                                    Toppan Merrill/FA        

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:  -K
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-A12G	Registration Statement for a Class of Securities — Form 8-A.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.