This is an installation of Neospring, an implementation of the Spring '83 protocol.
If this is neospring.brandur.org,
then it's run by Brandur
(brandur@ my domain) and hosts my board, which you can request like
so:
$ curl https://neospring.brandur.org/2c98169d0b6fa73cab5a830be8dde53c5f388d5c6f8e6f756b6b6dbcc83e1124
Board TTL is configured to be 22 days, as recommended by the specification.
Server code is written to be highly available and for robustness, and has a comprehensive test suite, but so far has little real-world vetting so far, so use with caution.