On 31 October 2020, anonymous ftp access will officially be discontinued at CDDIS. CDDIS is STRONGLY recommending all users begin to transition to using alternate method of access to the CDDIS archive. Examples of alternate methods can be found at: https://cddis.nasa.gov/Data_and_Derived_Products/CDDIS_Archive_Access.html.

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Other products available at CDDIS

The CDDIS provides access to general space geodesy-related products, such as Earth orientation parameters generated by the IERS Rapid Service/Prediction Center located at the U.S. Naval Observatory's Earth Orientation (EO) Department.