| Business | Phone |
| Check Collect Ltd 1340 T St Nw, Washington 20009 | (202) 234-0490 |
| Hls 1333 H St Nw, Washington 20005 | (202) 962-0306 |
| Mbia Muni Services Co 209 Pennsylvania Ave Se # 400, Washington 20003 | (202) 546-8337 |
| National Creditor Corp 601 Indiana Ave Nw # A, Washington 20004 | (703) 845-7590 |
| Nco Financial Systems Inc 5335 Wisconsin Ave Nw, Washington 20015 | (202) 686-7000 |
| Regional Collection Svc 2412 Minnesota Ave Se # 102, Washington 20020 | (202) 581-8071 |