| 66110 | Bankers' clearing house |
| 66110 | Clearing house (banking) |
| 66110 | Commodity contracts exchanges administration |
| 66110 | Company registration agent |
| 66110 | Financial markets administration |
| 66110 | Futures commodity contracts exchanges administration |
| 66110 | Securities exchanges administration |
| 66110 | Stock exchange activities |
| 66110 | Stock or commodity options exchanges administration |
| 66110 | |