This is one of the Netrek Metaservers, maintained by James Cameron and Bob Tanner at Real-Time.
You can find more information about Netrek at www.netrek.org.
A restriction has been placed on the metaserver.us.netrek.org that will avoid listing spare servers until the preferred server has at least 12 players.
At the moment, the spare servers are netrek.warped.us, netrek.hwy.com.au and netrek.pulsar-zone.net, and the preferred server is continuum.us.netrek.org.
Also, player count updates from netrek.warped.us and netrek.pulsar-zone.net are being limited to 1, until their reporting of robots is fixed.