| extension | φ:Q→Aut N | d | ρ | Label | ID | 
| C2.1(C8⋊8D4) = C24.133D4 | central extension (φ=1) | 64 |  | C2.1(C8:8D4) | 128,539 | 
| C2.2(C8⋊8D4) = C24.135D4 | central extension (φ=1) | 64 |  | C2.2(C8:8D4) | 128,624 | 
| C2.3(C8⋊8D4) = C23.23D8 | central extension (φ=1) | 64 |  | C2.3(C8:8D4) | 128,625 | 
| C2.4(C8⋊8D4) = C2.(C8⋊8D4) | central extension (φ=1) | 128 |  | C2.4(C8:8D4) | 128,665 | 
| C2.5(C8⋊8D4) = C2.(C8⋊7D4) | central extension (φ=1) | 64 |  | C2.5(C8:8D4) | 128,666 | 
| C2.6(C8⋊8D4) = C8⋊7(C4⋊C4) | central extension (φ=1) | 128 |  | C2.6(C8:8D4) | 128,673 | 
| C2.7(C8⋊8D4) = (C2×C4)⋊9SD16 | central extension (φ=1) | 64 |  | C2.7(C8:8D4) | 128,700 | 
| C2.8(C8⋊8D4) = C8⋊8D8 | central stem extension (φ=1) | 64 |  | C2.8(C8:8D4) | 128,397 | 
| C2.9(C8⋊8D4) = C8⋊14SD16 | central stem extension (φ=1) | 64 |  | C2.9(C8:8D4) | 128,398 | 
| C2.10(C8⋊8D4) = C8⋊11SD16 | central stem extension (φ=1) | 64 |  | C2.10(C8:8D4) | 128,403 | 
| C2.11(C8⋊8D4) = C8⋊8Q16 | central stem extension (φ=1) | 128 |  | C2.11(C8:8D4) | 128,404 | 
| C2.12(C8⋊8D4) = D4.2SD16 | central stem extension (φ=1) | 64 |  | C2.12(C8:8D4) | 128,409 | 
| C2.13(C8⋊8D4) = Q8.2SD16 | central stem extension (φ=1) | 64 |  | C2.13(C8:8D4) | 128,410 | 
| C2.14(C8⋊8D4) = D4.3SD16 | central stem extension (φ=1) | 64 |  | C2.14(C8:8D4) | 128,411 | 
| C2.15(C8⋊8D4) = Q8.3SD16 | central stem extension (φ=1) | 128 |  | C2.15(C8:8D4) | 128,412 | 
| C2.16(C8⋊8D4) = C23⋊3SD16 | central stem extension (φ=1) | 64 |  | C2.16(C8:8D4) | 128,732 | 
| C2.17(C8⋊8D4) = C24.84D4 | central stem extension (φ=1) | 64 |  | C2.17(C8:8D4) | 128,766 | 
| C2.18(C8⋊8D4) = C24.85D4 | central stem extension (φ=1) | 64 |  | C2.18(C8:8D4) | 128,767 | 
| C2.19(C8⋊8D4) = (C2×C4)⋊5SD16 | central stem extension (φ=1) | 64 |  | C2.19(C8:8D4) | 128,787 | 
| C2.20(C8⋊8D4) = C4⋊C4.106D4 | central stem extension (φ=1) | 64 |  | C2.20(C8:8D4) | 128,797 | 
| C2.21(C8⋊8D4) = (C2×Q8).8Q8 | central stem extension (φ=1) | 128 |  | C2.21(C8:8D4) | 128,798 | 
| C2.22(C8⋊8D4) = C24.89D4 | central stem extension (φ=1) | 64 |  | C2.22(C8:8D4) | 128,809 | 
| C2.23(C8⋊8D4) = C4.(C4⋊Q8) | central stem extension (φ=1) | 128 |  | C2.23(C8:8D4) | 128,820 |