That was my guess, that it’s pronounced similarly to something else, but I didn’t know how to pronounce Barium in English. Wikipedia says it’s bɛəriəm/BAIR-ee-əm I wouldn’t pronounce “bury em” that way, but I know my pronunciation is not good. I speak like the Hungarians in the Monty Python sketch “Dirty Hungarian Phrasebook”. These kind of jokes don’t work on me.
They still support them, they are just not on the landing page. You could select them during registration, maybe not all of them but I remember the African one from last time I created an airmail.cc address.