Currently, there are three equally relevant servers maintained by the dblp team:
- http://www.informatik.uni-trier.de/~ley/db/ (Trier 1)
- http://dblp.uni-trier.de/db/ (Trier 2)
- http://dblp.dagstuhl.de/db/ (Dagstuhl)
All three sites run on their own server setup in a different location. The data on all three sites is sync with each other (within a margin of up to some hours necessary to produce a new build and to propagate changes).
In the past, a number of externally maintained mirror sites existed, which are now no longer in sync with the current dblp dataset.