What is the transfer Due Date vs. Completion Date?

When transferring a phone number, the Due Date is the earliest date that Grasshopper’s underlying carrier can request for your local number transfer to take place. Your current provider can choose to grant a Completion Date sooner than the requested Due Date, but it's unlikely that they’ll do so. It’s a bit confusing, but more often than not, your Due Date will also be your Completion Date.