This is a typical entry in the gzone.cfg file.
You may edit this file and add to it or delete entries from it if you wish.
Currently gzone.cfg only supports the Felucca facet (britannia realm).

Region Cove
{
    Range       2206 1116 2290 1236
    Guarded     1
    nocast      0
}

Region LB's Castle
{
    Name        CastleBritish
    Range       1296 1560 1406 1694   // Lord British's castle
    Guarded     1
    nocast      0
}