An aih file extension is related to the ArcGIS for Desktop. An aih file contains attribute index.
Software that open aih file
AIH file extension - Attribute index
What is aih file? How to open aih files?
File type specification:
The aih file extension is associated with the ArcGIS for Desktop (also known ArcView), a GIS (geographic information system) software for Microsoft Windows that allows users to manage maps and geospatial data. The .aih file stores attribute index.
Attribute stores non-spatial information about a geographic feature in a GIS, usually stored in a table and linked to the feature by a unique identifier. For example, attributes of a river might include its name, length, and sediment load at a gauging station.
The default software associated to open aih file:
ArcGIS for Desktop Basic (ArcView) 
Company or developer:
Esri
ArcGIS for Desktop Basic (formerly known as ArcView) is GIS (geographic information system) application used to visualizing, managing, creating, and analyzing geographic data.
ArcGIS for Desktop Basic is a part of the ArcGIS Desktop. ArcGIS for Desktop Basic supports creation of interactive maps, spatial analysis, GIS deployment, map viewing and navigation, map printing etc.
List of software applications associated to the .aih file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open aih file, edit aih file, convert aih file, view aih file, play aih file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting aih files.
Programs that can create aih file - Attribute index
Programs supporting the exension aih on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about ArcGIS for Desktop Basic (ArcView) for create aih file action.
