Twin directories of ftp.rfc-editor.org:

[DIR]  ftp://ftp.mimuw.edu.pl/mirror/ftp.rfc-editor.org/
[DIR]  ftp://ftp.dntis.ro/pub/.1/ftp.rfc-editor.org/
[DIR]  ftp://sunsite.mff.cuni.cz/MIRRORS/ftp.rfc-editor.org/
[DIR]  ftp://195.209.204.84/mirrors/ftp.rfc-editor.org/
[DIR]  ftp://195.209.222.24/mirrors/ftp.rfc-editor.org/
[DIR]  ftp://ftp.int-evry.fr/mirror1/ftp.rfc-editor.org/