| SSN Range (Last 4 digits) | Module Number | Help Desk Telephone No. |
|---|---|---|
| 0000-0999 | Mod 1 | 410-966-1247 |
| 1000-1999 | Mod 2 | 410-966-5657 |
| 2000-3999 | Mod 3 | 410-597-1045 |
| 4000-5999 | Mod 4 | 410-966-8512 |
| 6000-7999 | Mod 5 | 410-597-1061 |
| 8000-9999 | Mod 6 | 410-597-1065 |
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