The other domains are still online, though z-library has yet to respond
Post edited, thank you @mbt2402 for correcting me
i remember when soap2day was a thing (it was one of the better web ones without downloading that we could easily use on the PS4 without a USB stick etc) they had soapgate.org which would give a list of the current working domains. different domains would go down but until they shut the entire thing down I never saw soapgate change