http://sn.1w6.org/file/mk-20150207T081018-z7crv5n.html
aha, it seems they created a nw access URL for the internet banking system, and apparently 'forgot' to redirect the old one to the new one - you can only get there by navigating the general part of the website to get to the link that now goes to the new URL - adapted my KeePassX record for them. (Finding the general website works now also illustrates that ping is deliberately disabled.)