| extension | φ:Q→Aut N | d | ρ | Label | ID |
|---|
| C2.1(C22×D9) = C2×C4×D9 | central extension (φ=1) | 72 | | C2.1(C2^2xD9) | 144,38 |
| C2.2(C22×D9) = C22×Dic9 | central extension (φ=1) | 144 | | C2.2(C2^2xD9) | 144,45 |
| C2.3(C22×D9) = C2×Dic18 | central stem extension (φ=1) | 144 | | C2.3(C2^2xD9) | 144,37 |
| C2.4(C22×D9) = C2×D36 | central stem extension (φ=1) | 72 | | C2.4(C2^2xD9) | 144,39 |
| C2.5(C22×D9) = D36⋊5C2 | central stem extension (φ=1) | 72 | 2 | C2.5(C2^2xD9) | 144,40 |
| C2.6(C22×D9) = D4×D9 | central stem extension (φ=1) | 36 | 4+ | C2.6(C2^2xD9) | 144,41 |
| C2.7(C22×D9) = D4⋊2D9 | central stem extension (φ=1) | 72 | 4- | C2.7(C2^2xD9) | 144,42 |
| C2.8(C22×D9) = Q8×D9 | central stem extension (φ=1) | 72 | 4- | C2.8(C2^2xD9) | 144,43 |
| C2.9(C22×D9) = Q8⋊3D9 | central stem extension (φ=1) | 72 | 4+ | C2.9(C2^2xD9) | 144,44 |
| C2.10(C22×D9) = C2×C9⋊D4 | central stem extension (φ=1) | 72 | | C2.10(C2^2xD9) | 144,46 |