FTTC checker

Hi am I using the right FTTC checker im using the BT wholesale one, but I don't think it is very reliable, as I have used friend's addresses that actually currently have FTTC but it shows as unavailable.
They installed a fibre cab next to the standard one about 2 months ago, then about 2 weeks ago they hooked up the power to it so looks like it is progressing for me.

I'm going to go out on a limb and guess that you're just trying it with a postcode alone. Only the phone number/full address checker will generally tell you about FTTx.

It will be that in that postcode there are multiple cabs serving the area. Some of them will be fibre ready, others not... So when you run a postcode check it will guess which cabinet that house is using, if it gets this wrong (and chooses a cabinet without fibre) it will show as unavailable.

Using phone number means it is 100% locating the correct cabinet.

He's not with BT so cant use phone number have used full address with both friends and shows no FTTC

Does it show the cabinet number just above the estimates table? It should do that even if there is no FTTC. Then you can compare that with the cabinet for the one with FTTC.

Their cabinet maybe out of capacity.