For most merchants, the request for AVS verification on a transaction is
automatically submitted via the payment gateway/processor alongside the
payment authorization request. The request pings the issuing bank with
the billing address information us...
Each BIN is unique to one specific offering that a bank has in its
portfolio - whether credit, debit, prepaid or commercial. The expansion
of BINs from 6-digit BINs to 8-digit BINs primarily affects two
requirements of the PCI DSS (3.3 & 3.4) only.
