ESRI Attribute Index Files
Unknowngis
File generated by ESRI ArcGIS software. Found with ESRI Shapefile Header Index files, which have extension ain. Together they store the attribute index of the active fields in a table, or a theme’s attribute table.
Identify it
| Extensions | .ain |
|---|---|
| Signatures | 41ceae1940060000 at byte 0 (ESRI Attribute Index Files) |
| PRONOM | fmt/1696 |
| Wikidata | Q27487522 |
Not sure your file is this? Identify it from its first bytes, in your browser.
Open it
No software is recorded for this format.
Convert it
No conversion recorded. One of the tools above may export it; search for a chain.
0Sources
From PRONOM, Wikidata. Updated 2026-10-20.