Every ID in the App is either 15 characters or 18 characters (API). The first 3-digits of the ID are always the Entity ID which can be used to determine the type of the entity. Below is the Entity ID mapping. To use it, get the first 3-digits of the ID and look-up the Entity name in the following table.
For example, for ID: 00D000000000062, you need to lookup "00D" in the table below, which will indicate that it's an Organization ID.
Below is an example of a Contact ID (003D0000001aH2A) on NA1 which has server ID 'D':
|Object ID Prefix||Server ID||Identifier|