| Business | Phone |
| Heartland Payment Systems 1 Penn Plz # 1531, New York 10119 | (212) 239-3200 |
| Mastercard International Inc 888 7th Ave, New York 10106 | (212) 649-4600 |
| Payment Exchange 53 W 36th St # 902, New York 10018 | (212) 981-2100 |
| Paymentech 2112 Broadway # 304, New York 10023 | (212) 875-4001 |