On 28 Mar, 16:36, Ianigsy wrote:

Yes. AIUI debit cards use a different number range to credit cards.
Whether companies elsewhere in the world would be able to instantly
tell the difference between a UK issued debit and credit card is
another question.

Yes again- having spoken to somebody who works in the fraud risk
department of a bank, the UK is only just moving to a system of having
the same number of digits in a debit card number as the rest of the
world. Prior to that it wasn't possible to use a UK-issued debit card
for online transactions processed abroad as foreign systems wouldn't
accept our account numbers.


I think the issue you're referring to on concerns Switch debit cards,
which have now been rebranded Maestro, which used a different
numbering system but I believe are now 'switching over' to the
worldwide standard (16 principal digits).

Visa debit cards (aka Visa delta) have always complied with the global
standard, as have their online authorisation only sibling Visa
Electron.

I'm not quite sure what the story is with regards to Switch's online
authorisation only sibling the Solo card and their compliance or
otherwise with regards to the worldwide standard.