Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000225635 | |||
| Series S000002332 | BlackRock Municipal Insured Fund | ||
| Class/Contract C000006110 | Investor A | ||
| Class/Contract C000006111 | Investor B | ||
| Class/Contract C000006112 | Investor C1 | ||
| Class/Contract C000006113 | Institutional | ||
| Status | Name | Ticker Symbol | |
| CIK 0000225635 | |||
| Series S000002334 | BlackRock National Municipal Fund | ||
| Class/Contract C000006118 | Investor A | ||
| Class/Contract C000006119 | Investor B | ||
| Class/Contract C000006120 | Investor C1 | ||
| Class/Contract C000006121 | Institutional | ||
| Status | Name | Ticker Symbol | |
| CIK 0000225635 | |||
| Series S000002335 | BlackRock Short-Term Municipal Fund | ||
| Class/Contract C000006122 | Investor A1 | ||
| Class/Contract C000006123 | Investor B | ||
| Class/Contract C000006124 | Investor C | ||
| Class/Contract C000006125 | Institutional | ||
| Status | Name | Ticker Symbol | |
| CIK 0000225635 | |||
| Series S000011867 | BlackRock High Yield Municipal Fund | ||
| Class/Contract C000032425 | Investor A | ||
| Class/Contract C000032427 | Investor C | ||
| Class/Contract C000032428 | Institutional | ||
IRS No.: 132896246 | State of Incorp.: NJ | Fiscal Year End: 0630
Type: 497 | Act: 33 | File No.: 002-57354 | Film No.: 061020869