FTPS or SFTP alternative to ftp.attglobal.net?

Hi-

We are a customer and we do daily downloads of access numbers from : ftp://ftp.attglobal.net/pub/dialtone/phone4.csv. Due to IT security changes we need to use FTPS (prefered) or SFTP. Is there an alternative URL we can use that offers this data through a secure FTP?

Thanks.

-Bill