| Business | Phone |
| Banctek Solutions 1660 Wynkoop St # 1050, Denver 80202 | (303) 623-3290 |
| Card Plus Intl Inc 243 E 19th Ave, Denver 80203 | (303) 860-7411 |
| First American Payment Systems Denver 80203 | (303) 942-0223 |
| Sterling Card Systems 720 S Colorado Blvd, Denver 80246 | (303) 759-9700 |
| Royal Merchant Svc 155 S Madison St # 308, Denver 80209 | (303) 394-3670 |