You are connected to Repology using legacy IPv4 protocol.
Due to IPv4 address exhaustion
it may become too expensive or impossible for Repology to support IPv4 in the nearest future.
Time to switch to IPv6!
Summary: An all-in-one solution that provides Boards/Library Managers, sketch builder, board detection, uploader, and many other tools needed to use any Arduino compatible board and platform from command line or machine interfaces