🔍 What is the DD Number?

The DD number, or Document Discriminator, is a code printed on California driver's licenses and state IDs. It usually appears near the bottom right corner and looks like this:

DD 01/16/2020663RB/BBFD

It encodes three things:

📅 The issue date of the ID
🏢 The DMV field office that issued it
🧩 A unique internal identifier

DDs do NOT appear on documents like Social Security cards, passports, or birth certificates.

They’re unique to official government-issued IDs:

✅ Driver’s licenses
✅ State ID cards

⚙️ How DMVerify Works

Step 1: Copy the DD Field

Look at the ID and copy the full DD line — exactly as it appears. Example: 01/16/2020663RB/BBFD

Step 2: Paste it into DMVerify

Enter the DD into our web tool or send it via API. We’ll parse the string behind the scenes.

Step 3: We Decode the Issuing Office

Our proprietary system extracts the embedded DMV office code and maps it to the official issuing location.

Step 4: You Get the Result — Instantly

DMVerify returns the correct California DMV office, helping you spot fakes, mismatches, or suspicious entries.