The application you see this in, software-properties, uses /usr/share /python-apt/templates/Ubuntu.mirrors as the source of information for the available mirrors. In Ubuntu 20.04 LTS, with python-apt version 2.0.0, I do not see "mirror.upb.edu.com", however I do see that in 18.04 LTS. We'll target this for fixing in our next upload of python-apt for Ubuntu 18.04 LTS.
** Package changed: choose-mirror (Ubuntu) => python-apt (Ubuntu) ** Changed in: python-apt (Ubuntu) Status: Incomplete => Triaged ** Changed in: python-apt (Ubuntu) Importance: Undecided => Medium ** Also affects: python-apt (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: Ubuntu Bionic Importance: Undecided Status: New ** Changed in: python-apt (Ubuntu Bionic) Status: New => Triaged ** Changed in: python-apt (Ubuntu Bionic) Importance: Undecided => Medium ** Changed in: python-apt (Ubuntu Bionic) Milestone: None => ubuntu-18.04.5 ** Changed in: python-apt (Ubuntu) Status: Triaged => Fix Released ** Changed in: ubuntu Status: Confirmed => Invalid ** Changed in: Ubuntu Bionic Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877233 Title: Remove inactive Mirrors to Colombia To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1877233/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs