Postcode checking for FTTC is not reliable, for technical reasons.
You need to use this checker
. Depending on which ISP and product you are on, the phone number checker may not recognise the number. If it is recognised then that is the most accurate estimator.
If it is not recognised, use the Address option. In that enter just the postcode then submit. It will give you a dropdown list of all addresses in the postcode for you to choose yours. (Just saves all the typing!).
Zen has two suppliers. BT Wholesale and a form of LLU where it uses its own backhaul. (The latter possibly being fed at the exchange by a TalkTalk Business link, but going to a Zen POP somewhere not all the way to TTB).
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - Three 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up.
"Democracy means simply the bludgeoning of the people by the people for the people." Oscar Wilde