There are several sources on the Internet for looking up German feldpost numbers from WWII, but I find most of them to be user unfriendly. So, I put together my own.
You can see it
here, or you can access it from the menu on the front page of my website.

The database lists all normal feldpost numbers. It does not yet list the Sammelfeldpostnummern, or Collective Feldpost Numbers, which were those used in large cities, and not assigned to individual units. I'm still typing those in.
To use the database, you can use the filters at the top of each column to filter that column.

Or, you can use the search block at the top, which searches across all columns.

At the bottom is another table with commonly used abbreviations.
