NCT has an extension, but it only applies to cars with a test due date on or after 28 March 2020.
https://www.ncts.ie/1115

So unfortunately it doesn't apply to you OP.

No-one really knwos when centres will reopen.
Keep an eye on NCT site https://www.ncts.ie/1115 and news thread https://www.boards.ie/vbulletin/show...p?t=2058065043