Apache ORC (Optimized Row Columnar) file format — file signature 4F 52 43 at offset 0

For Apache ORC (Optimized Row Columnar) file format, hex signature is 4F 52 43; offset is 0; extension is orc, recorded from its source on 2026-08-03.

Hex signature: 4F 52 43
Offset: 0
Extension: orc verified
Format: Apache ORC (Optimized Row Columnar) file format verified

Sourceen.wikipedia.org

Verified2026-08-03

Review by2027-08-03

DatasetFile format magic numbers

What the source says

<https://en.wikipedia.org/wiki/Apache_ORC> Apache ORC (Optimized Row Columnar) file format

— en.wikipedia.org, retrieved 2026-08-03

Source

en.wikipedia.orghttps://en.wikipedia.org/wiki/List_of_file_signatures

Last verified against source: 2026-08-03. Due for re-check by 2027-08-03. This page as Markdown · OKF bundle · full dataset as JSON.

Apache ORC (Optimized Row Columnar) file format — file signature 4F 52 43 at offset 0

What the source says

Source

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