There does not seem to be an abbreviation for "now known as" as there is for "also known as" (aka). The acronym nkais used to mean "never known as" and cka to mean "commonly known as."The abbreviation for "formerly known as" is the French word née (feminine of né, literally "born" -- also used for a woman's maiden name).
F/K/A or FKA
Taiwan was formerly known as Formosa.
Oslo was formerly known as Christina
Yes, the Sami, formerly known as the Lapps.
what is the abbreviation for no known allergies
The city of Vadodara in Gujarat was formerly known as Baroda.
Levant
UFO
Formerly known as
There is no known abbreviation for the word tool.
Abbreviation:(in the US) Veterans Affairs (formerly Veterans Administration).Vicar Apostolic