Hi. It is known that astro rides on maxis fiber to provide iptv service. May i know what if I am a maxis one prime user and wishes to subscribe to astro iptv? Is this even possible? Anyone tried that?

Yes. Can.

Can ah? Last i call last month cannot. Either u get fibre + postpaid to get unlimited 4g data, or u get fibre + astro. But if can get fibre + postpaid + astro, gg unifi

Try to check with Maxis again. Now they allow Maxis subscriber to add on Astro directly to their broadband.

You can sign up Astro IPTV with Astro only.
Maxis can sells Astro package, but only with limited Astro package, and it's not under IPTV platform.

Since right now you're OnePrime user, what you can do it to call 123, request to detach your Maxis Fibre and phone plan (No longer under OnePrime & no longer enjoy mobile unlimited data).
With your stand alone Maxis Fibre acc, you can switch to Astro Broadband, which you can have Astro IPTV + Fibre Broadband + Postpaid