It's the protocol which is deprecated, not the server. The article says to use http: in preference to ftp: but still the same server.

John

On 4 July 2017 07:25:31 BST, Ed Neville <ed-bitfolk@s5h.net> wrote:
On Tue, Jul 04, 2017 at 03:07:02AM +0000, Andy Smith wrote:
 I saw that too. There was also a couple of hours of downtime of
 ftp.uk.debian.org yesterday between around 11:20 and 13:29Z.

ftp://ftp.debian.org [1] was on the deprecate list I thought. Maybe 
they're moving things around in relation to ftp* mothballing?

  1: https://www.debian.org/News/2017/20170425

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