We have some temporary DNS resolution problems with the opensuse.org domain. The problem is already identified and we work on a final solution.
Caching problems might appear for the next 12 hours (until 10:00 CET at 2020-02-28). Please stay tuned.
Temporary work around might be to query 195.135.221.195 (2001:67c:2178:8::31) directly for opensuse.org domain entries.