| Business | Phone |
| Bizcom Electronics Corp Baltimore 21212 | (410) 323-2031 |
| C J Washington Inc 1 E Chase St # 1113, Baltimore 21202 | (410) 347-7575 |
| Metris Co 8020 Corporate Dr, Baltimore 21236 | (410) 248-4360 |
| National Credit Card Registry 1045 Taylor Ave, Baltimore 21286 | (410) 825-4040 |
| Nationwide Check Services 3102 Timanus Dr, Baltimore 21244 | (410) 701-2000 |
| Merchant Services Of America 3 W Baltimore St, Baltimore 21201 | (410) 944-4730 |
| Usb Merchant Svc-Maryland 11 E Chase St # 1a, Baltimore 21202 | (410) 727-4286 |