| extension | φ:Q→Aut N | d | ρ | Label | ID | 
| C2.1(C4⋊2Q16) = C42.99D4 | central extension (φ=1) | 128 |  | C2.1(C4:2Q16) | 128,535 | 
| C2.2(C4⋊2Q16) = (C2×C4)⋊9Q16 | central extension (φ=1) | 128 |  | C2.2(C4:2Q16) | 128,610 | 
| C2.3(C4⋊2Q16) = C2.(C4×Q16) | central extension (φ=1) | 128 |  | C2.3(C4:2Q16) | 128,660 | 
| C2.4(C4⋊2Q16) = C42.29Q8 | central extension (φ=1) | 128 |  | C2.4(C4:2Q16) | 128,679 | 
| C2.5(C4⋊2Q16) = C42.117D4 | central extension (φ=1) | 128 |  | C2.5(C4:2Q16) | 128,713 | 
| C2.6(C4⋊2Q16) = C8⋊8Q16 | central stem extension (φ=1) | 128 |  | C2.6(C4:2Q16) | 128,404 | 
| C2.7(C4⋊2Q16) = C8⋊7Q16 | central stem extension (φ=1) | 128 |  | C2.7(C4:2Q16) | 128,406 | 
| C2.8(C4⋊2Q16) = Q8.1Q16 | central stem extension (φ=1) | 128 |  | C2.8(C4:2Q16) | 128,408 | 
| C2.9(C4⋊2Q16) = C8⋊Q16 | central stem extension (φ=1) | 128 |  | C2.9(C4:2Q16) | 128,424 | 
| C2.10(C4⋊2Q16) = C8⋊2Q16 | central stem extension (φ=1) | 128 |  | C2.10(C4:2Q16) | 128,426 | 
| C2.11(C4⋊2Q16) = C8.3Q16 | central stem extension (φ=1) | 128 |  | C2.11(C4:2Q16) | 128,428 | 
| C2.12(C4⋊2Q16) = (C2×C4)⋊2Q16 | central stem extension (φ=1) | 128 |  | C2.12(C4:2Q16) | 128,748 | 
| C2.13(C4⋊2Q16) = C4⋊C4.95D4 | central stem extension (φ=1) | 128 |  | C2.13(C4:2Q16) | 128,775 | 
| C2.14(C4⋊2Q16) = (C2×C4)⋊3Q16 | central stem extension (φ=1) | 128 |  | C2.14(C4:2Q16) | 128,788 | 
| C2.15(C4⋊2Q16) = (C2×C8).52D4 | central stem extension (φ=1) | 128 |  | C2.15(C4:2Q16) | 128,800 | 
| C2.16(C4⋊2Q16) = (C2×C4).19Q16 | central stem extension (φ=1) | 128 |  | C2.16(C4:2Q16) | 128,804 | 
| C2.17(C4⋊2Q16) = (C2×C8).1Q8 | central stem extension (φ=1) | 128 |  | C2.17(C4:2Q16) | 128,815 |