Barcodes

Hi, I've ordered my first 1,000 barcodes from LibraryThing and now I want to order another set of 1,000. My question is: How do make sure my next order doesn't include the exact same barcode numbers as my first order? For example, if my last set of barcodes ends with 03500, how can I order 03501 and onwards in my next order? Thank you

From https://www.librarything.com/more/store/barcodes ?

There is a set of checkboxes where you select which numbers you want. So just select the ranges you want this time.

If you are ordering from another place or a different product - can you post a link?