Which 5G Bands - Not Frequencies - Are Used?

I never got a reply: which bands, not frequencies, are being used by Videotron to supply 5G? I noted in my previous response, that 1700MHz uses n66 and n86; whilst 2100MHz uses n1, n34, n65, n66, n84 and n95. Which of these are currently used? If the answers can't be found here, where else might I look or ask? Is there perhaps a number I might call? Thanks a bunch!