All of the severs allow players to be Player Killers, Darktide is exclusively PK, the other servers default to Non Player Killer and also let players do Player Killer Lite.

All of these servers used to be hosted on Zone.msn.com until Turbine bought the franchise entirely from Microsoft in 2003. The servers remained at a hosting facility in Washington State until 2008 when all server hardware was replaced and relocated to a facility in Massachusetts near Turbine headquarters.

Live Worlds

Darktide

Frostfell

Harvestgain

Leafcull

Morningthaw

Solclaim

Thistledown

Verdantine

Wintersebb

Beta Servers

Blue

Green

Red

Beta World Red was the first of the Beta servers on the Internet Gaming Zone for Asheron's Call.

Test Servers

Shadowclaim

This server was available for all players initially from the 26th of April 2003 to 28th of April 2003 to stress test some new server hardware. The character database was an exact copy of Solclaim, hence the name Shadowclaim.

Original Link: http://zone.msn.com/asheronshadow/default.asp

Throne of Destiny Open Preview

This server was available for all players from ??/??/?? to ??/??/?? as an open preview of the upcoming expansion pack Throne of Destiny. The character database was an exact copy of Leafcull.

Shadowfell

This server opened October 4rd, 2008 after being delayed a day and remained open until October 6th, 2008 to stress test new server hardware. The character database was an exact copy of Frostfell.

Internal Test Server

As mentioned in numerous posts by developers, Turbine has an internal test server. It is currently not available for players, supposedly. There has been some active players granted access to the test server to test content prior to it being delivered to the general player base.