Alentus nameservers in listed order:

Primary Host Name..........: ns1.zabco.net
Primary Host IP Address....: 208.123.210.2

Secondary Host Name........: ns2.zabco.net
Secondary Host IP Address..: 208.123.212.2

More information can be found in the following knowledge base article:
http://support.alentus.com/KB/a426/transferring-your-domain.aspx?KBSearchID=246