404 - File Not Found.

File not found for celestrak.org/NORAD/elements/iridium.txt.

All legacy static TLE .txt files have now been removed, as originally explained on 2023-12-28.
You can find the current queries (available since 2020-05-27 on the Current GP Data page.
You should update your queries using A New Way to Obtain GP Data.

Please contact ts.kelso@celestrak.org if you have questions.