So, I just created a new #XMPP / #Jabber account, and then headed over to #Movim for an instance.

We're up and running: https://mov.im/?blog/youronlyone

^_^

Thank you for the heads-up @mattj @debacle

I remember now the services I used all those years ago:
* #TalkrIM (they offered managed XMPP hosting with custom domain, I can't recall if they used #ejabberd)
* #BuddyCloud
* #Jappix
* #Juick – I think it's still working, but I haven't tested yet (and only one instance left, the flagship server?)

My XMPP account is now at Tigase.IM family of sites.