The Aether is roughly divided into Provinces of space each with a number of Shards. Here is a list of some of them:

• The Frost Shepherds - A shared province full of history and import
• Home - Rachel's adventuring province?
• Welmet - Cosimo's adventuring province, and home of the Welmet Voidspace station
• Nemedobur - Declan's adventuring province
• The Road - Rew's adventuring province
• The Empire of Blossoms - A shared province of faded Feywild might ruled by an empire of decadent elves who are content to have their mercenaries use the empire's advanced Arcana to do their dirty work for them
• The Blight
• Occulous - A province ruled by eye tyrants
• Dreamshards - A province of Fey Shards populated by the dead and ruled by ghosts who have forgotten that they no longer live

There are a number of Voidspan Gates instantly connecting several shards across provinces. Here is a list of some of them:

• Welmet and The Road are connected