We report on magnetization measurements of single crystalline Dy₂Fe₁₇ in pulsed magnetic fields up to ∼127 T. To produce the fields, we used (i) a single- and (ii) a double-coil magnet generating pulses in the 10 ms range, as well as (iii) semidestructive single-turn coils creating pulses of much shorter duration, ∼5 µs. We observed steplike transitions at 64.3 and 77.7 T, for fields applied along [100] and [120], respectively. We confirmed the latter transition by ultrasound-velocity measurements using the double-coil magnet. Our data allowed us to locate the orthogonality point of Dy₂Fe₁₇ at (μ₀H_⊥=90T, M_⊥=31 μ_B/f.u.) and determine the intersublattice exchange field, μ₀H_ex = 215 T.