onenew - global thinking

Ubuntu Mirror list
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HELP:
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https://help.ubuntu.com/community/Repositories
https://help.ubuntu.com/community/Repositories/CommandLine
https://help.ubuntu.com/community/Repositories/Kubuntu

The official mirror list is available at:
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https://launchpad.net/ubuntu/+archivemirrors
https://wiki.ubuntu.com/Mirrors?action=show&redirect=Archive

The mirror servers for Ubuntu are:
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The default server at
archive.ubuntu.com

Such as:
http://us.archive.ubuntu.com/ubuntu/
http://ch.archive.ubuntu.com/ubuntu/

ISO country extension redirects to the best server in this country, and occasionally simply to archive.ubuntu.com.
## Note that ccTLD.archive.ubuntu.com (e.g. us.archive.ubuntu.com) always exists for every ISO-3166 country code, as an alternative name for a mirror currently recommended for each country. Depending on conditions, sometimes this will be one of the mirrors below, and sometimes it will be the same as archive.ubuntu.com.

The mirror servers for Switzerland are:
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http://mirror.switch.ch/ftp/mirror/ubuntu/
ftp://mirror.switch.ch/mirror/ubuntu/
http://mirror.zhdk.ch/ubuntu/
ftp://mirror.zhdk.ch/ubuntu/
rsync://mirror.zhdk.ch/ubuntu/

According to "https://launchpad.net/ubuntu/+archivemirrors", the SWITCH mirror runs at 10 Gbps, which among the highest speed in the world.

Conclusion
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The help document
https://help.ubuntu.com/community/Repositories/CommandLine
is very usefull. We find all informations in it.
Basically we could use the server "http://ch.archive.ubuntu.com/ubuntu/" for repositories which will redirect us to our country. It is even better to directly use the server in Switzerland. The best server in Switzerland is the Switch server at "ftp://mirror.switch.ch/mirror/ubuntu/" because it is the fastest.