Mastercard is releasing new series 2 bin ranges. Quote from their information sheet is:
"To help ensure that MasterCard and its customers are best positioned to
enable the next generations of payments, MasterCard is expanding the
Bank Identification Number (BIN) range by introducing a new range of 2
series BINs (222100–272099) that will be processed in the same manner as the MasterCard 51–55 series BINs are processed today."