On 31 October 2020, anonymous ftp access will officially be discontinued at CDDIS. Beginning October 1, 2020, CDDIS will bandwidth limit ALL IPs using anonymous ftp to just 50KB/s and will limit simultaneous downloads to only 3 per IP address. 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.