BIN 555501 — Lookup & Card Details

BIN 555501 is issued by Silkbank Limited, from Pakistan, on the Mastercard network, as a credit card.

A Bank Identification Number (BIN, or Issuer Identification Number / IIN) is the first 6 to 8 digits of any payment card. It tells the payment network which institution issued the card, what kind of card it is, and where it was issued. For BIN 555501, that institution is Silkbank Limited in Pakistan. The card runs on the Mastercard network. Transactions settle in PKR.

Mastercard is a global network whose BINs fall in the 51–55 and 2221–2720 ranges, accepted at merchants worldwide.

Merchants, fraud teams, ad platforms and developers use BIN data to route transactions, localize checkout, detect chargebacks and decide which card products they accept. BIN 555501 itself is public metadata — it identifies the issuer, not the cardholder.