Asty is another name that Athenians had for their city. According to Diodorus Siculus (Book 1) it is claimed that the Athenians were colonists from Sais in Egypt and that they brought the name Asty from the city of the same name there, which is thought to be Alexandria. Sais was the centre of the cult of the Egyptian goddess Neith and accepted by Plato (Tim. 21E) as identical to Athena after whom the Greek city was named. Tim. 21E uses the term Asty in the Latin translation of Chalcidius only, a fact highlighted by R. McQuillen who also claims(a) that Atlantis was in fact located in the Nile Delta and uses Asty as a starting point for his thesis.
*(a) http://gizacalc.freehostia.com/Atlantis.html (link broken 16/6/14) See: https://web.archive.org/web/20110711034907/http://gizacalc.freehostia.com/Atlantis.html*.