JCB card IIN changed or updated ?

Question

With respect to previous question on SO, I raised an issue on active_merchant github issues on found that I had to change the regex to validate the card from JCB.

Now the question is where do I find the changed or updated IIN if they really are ? This wikipedia article shows the IIN range for JCB as 3528-3589.

But the test card number I got from Authorize.net is 3088000000000017. But this card number does not fall in the range specified by wikipedia.

So my questions

1. Is this 3088000000000017 number a valid JCB card ? These sites say yes : One & Two
2. Is the IIN for JCB changed ?
3. How to keep track of changed of updated IIN ?

Answer 1

My advice is to apply the loosest validation possible if there is no compelling reason to know the card scheme; Fall back if necessary based on the first digit only. (Particularly if transactions are rejected based on IIN/BIN data sourced from Wikipedia ...)

For example in your linked validation scheme all Diners cards are assumed to begin 6011 - there are other ranges.

I don't know what Ruby's RE engine is but does /^4[0-9]{12}([0-9]{3})?$/ actually match a 19 digit PAN? (It must).

FWIW I use the (UK Centric): http://www.barclaycard.co.uk/business/files/Ranges_and_Rules_September_2014.pdf