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E1Captives
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E1
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E4The Box
E5Bucharest
E6Janus
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Box 21 — streaming FAQ
Which OTT platform streams Box 21?
Box 21 is streaming on 10 in Australia. It's not currently on Netflix.
Is Box 21 on Netflix?
No, Box 21 is not on Netflix in Australia as of August 2026. It's currently on 10.
Is Box 21 on Amazon Prime Video?
No, Box 21 isn't on Amazon Prime Video in Australia right now. It's on 10 instead.
Where can I watch Box 21 for free?
Box 21 is available to stream free (with ads) on 10 in Australia.
How many seasons are in Box 21?
Box 21 has 1 season in total (6 episodes). The series concluded in 2020.
Are all episodes of Box 21 out yet?
Yes — all 6 episodes across 1 season of Box 21 are out and available to stream.
Is there a Season 2 of Box 21?
No — Box 21 ended after 1 season, so there is no Season 2.