Thanks to Rich Roberts and Mike Cherry for answering to my question.
>>I am having problems with anonymous FTP to rna.cshl.org
>(the rebase host). It is complaining that host information
>is not in the database. Neither nslookup nor archie did
>Can anyone help with the IP number for (ex?) rna.cshl.org ?
The primary REBASE host is now: vent.neb.com (18.104.22.168).
Look in pub/rebase directory.