When checking ranka, I noticed that the IMSA's website http://www.imsaworld.com seems to be empty.
All that can be seen in a 404
Does anyone know if the organisation is still active? I suppose that it is possible that they just had a webserver-hiccup

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North Lecale

Might help if you gave the name of the organization. There is more than one that uses IMSA.

I've been confused by website renames (and old name not being forwarded)

I'd try using a search engine on the organization name which should give you a way to see if still kicking.

International Mind Sports Association

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North Lecale

Actually I assumed that, but of course the .com address implied one of the other IMSA'a (say motor the racing one). The sites of non-profits aren't supposed to be .com

The problem might be site name change, especially where there is a low volume of usage. I had no problem finding their Facebook page by Googling the organization name. But even that was very low volume/infrequent postings so hard to tell if still active.

Good hunting.