| extension | φ:Q→Aut N | d | ρ | Label | ID |
|---|
| C12.1(C3xA4) = A4xC36 | central extension (φ=1) | 108 | 3 | C12.1(C3xA4) | 432,325 |
| C12.2(C3xA4) = C4xC9:A4 | central extension (φ=1) | 108 | 3 | C12.2(C3xA4) | 432,326 |
| C12.3(C3xA4) = C9xC4.A4 | central extension (φ=1) | 144 | 2 | C12.3(C3xA4) | 432,329 |
| C12.4(C3xA4) = C36.A4 | central extension (φ=1) | 144 | 6 | C12.4(C3xA4) | 432,330 |
| C12.5(C3xA4) = C12xC3.A4 | central extension (φ=1) | 108 | | C12.5(C3xA4) | 432,331 |
| C12.6(C3xA4) = C4xC32.A4 | central extension (φ=1) | 36 | 3 | C12.6(C3xA4) | 432,332 |
| C12.7(C3xA4) = C4xC32:A4 | central extension (φ=1) | 36 | 3 | C12.7(C3xA4) | 432,333 |
| C12.8(C3xA4) = C3xQ8.C18 | central extension (φ=1) | 216 | | C12.8(C3xA4) | 432,337 |
| C12.9(C3xA4) = Q8:C9:4C6 | central extension (φ=1) | 72 | 6 | C12.9(C3xA4) | 432,338 |
| C12.10(C3xA4) = C4oD4:He3 | central extension (φ=1) | 72 | 6 | C12.10(C3xA4) | 432,339 |
| C12.11(C3xA4) = C32xC4.A4 | central extension (φ=1) | 144 | | C12.11(C3xA4) | 432,699 |