Any way to figure out if I'm on TTB Backhaul or BT Wholesale

I could be wrong here but my understanding is that TT consumer broadband normally goes through BT Wholesale while TT Business goes through their own backhaul which they then sell to other providers.

I'm on TT Business FTTP but would like to know what backhaul I'm on. I haven't asked customer service as yet as so far they've proved to be useless on much easier questions post sign-up, and I suspect they piggyback the whole FTTP ("Full Fibre" in TTB speak) to their consumer division as they give you a separate phone number to call through their support website live chat, who can't help you with FTTP.

Think Broadband's speed test lists me as TalkTalk rather than TalkTalk Business (which is also in the dropdown list) and I'm on AS9105 which only peers to AS13285. Some list the latter as "OPALTELECOM-AS" -- can I assume that's TT Business then?

You’re on TT backhaul, not BTW

In reply to a post by ubernick:

I could be wrong here but my understanding is that TT consumer broadband normally goes through BT Wholesale while TT Business goes through their own backhaul which they then sell to other providers.

All Openreach based Talktalk connections, both Talktalk residential and Talktalk business, use Talktalk backhaul.

Talktalk never use BT Wholesale.
Talktalk isn't available on exchanges where their backhaul isn't present for this reason.