<PAGE>
EXHIBIT 21.1
------------
SUBSIDIARIES OF THE REGISTRANT
------------------------------
--------------------------------------------------------------------------------
Subsidiary Jurisdiction of Organization
--------------------------------------------------------------------------------
StorageNetworks Securities Corporation Massachusetts
--------------------------------------------------------------------------------
StorageNetworks Asia Pacific Pty Limited Australia
--------------------------------------------------------------------------------
StorageNetworks Connections, LLC Delaware
--------------------------------------------------------------------------------
StorageNetworks GmbH Germany
--------------------------------------------------------------------------------
StorageNetworks UK Ltd. United Kingdom
--------------------------------------------------------------------------------