This article explains how to use ledger bitcoin wallet with Blockonomics

If you are using ledger live, follow the below instructions to find your xpub:

1. Accounts > Select Account > ToolBox Icon (Top Right) > Advanced Logs

2. Goto stores page, add a new store and set the above into Destination wallet > xpub field

3. Click Receive in your ledger wallet

4. Paste address from Step 3  in Sample Receiving address and click on Save Changes


5. Click Ok if the following dialog is shown 

6. Save Changes and Add a Tag for identification purposes (Optional)