| Mask | Data File | Fields | Viewer | |
|---|---|---|---|---|
| National Mask | arcticnation.asc | NationCodes.txt | National Viewer | |
| Sub-National Mask | arcticsubnation.asc | SubNationCodes0307.txt | SubNational Viewer | |
| Admin. Subdivisions Mask | arcticadmincodes.asc | AdminCodes0307.txt | AdminSubDiv Viewer | |
| Extended Admin. Subdivisions Mask | admincod_ext_01.asc | AdminCodes_ext_01.txt | ||
| Extended Admin. Subdivisions Hybrid Mask | admincod_ext_hybrid_01.asc | AdminCodes_ext_hybrid_01.txt | ||
| Zip Archive (ESRI grid, shapefile, and geodatabase format of above) | ||||
| ID code description | ||||
 | ||||
| version 1.2 | ||||
| version 1.0 (Old) | ||||