What number does Tesla UK send texts from? (authentication issue)

Trying to verify my phone number via accounts.tesla.com

I cant get it to send me a verification text. Nothing happens. No error message, nothing. It definitely has the right number for me.

So, I'm wondering if at some point ive blocked it by mistake . Unfortunately all i can see is a very long list of blocked numbers on my phone no way to tell if one is Tesla.

Other than that is there an issue with UK phone numbers at present?

ETA Tried it again next day (today) and it worked, verification message came through straight away.