# RCFile columnar file format — file signature 53 45 51 36 at offset 0

For RCFile columnar file format, hex signature is 53 45 51 36; offset is 0; extension is rc, verified against its source on 2026-09-22.

- **Hex signature:** 53 45 51 36 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** rc _(verified: appears in the quote below)_
- **Format:** RCFile columnar file format _(verified: appears in the quote below)_

## What the source says

> 53 45 51 36 | SEQ6 | 0 | rc | RCFile columnar file format |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).