21 3C 61 72 63 68 3E 0A

Unix archiver (ar)-MS Program Library Common Object File Format (COFF)

category: file-signature
normalized: 213c617263683e0a
confirmed: 2026-03-15
lookups: 1
source: https://www.garykessler.net/

Unix archiver (ar)-MS Program Library Common Object File Format (COFF). File extension(s): LIB. Kessler type: Compressed archive.

Similar magic numbers

value	name	category
4B 47 42 5F 61 72 63 68	KGB archive	file-signature
21	MapInfo Sea Chart	file-signature
21 12	AIN Compressed Archive	file-signature
73 72 63 64 6F 63 69 64	CALS raster bitmap	file-signature