Constituent Number by Address Upload

Hello Everyone! 

I am pretty sure the answer is no, but I wanted to ask anyway!

Is there a way to upload a list of addresses and see if they have a constituent number in the system? I have an old list of ticket buyers that I was told to add to the current mailing lists, but want to see if I can save some time before looking them up individually.

Thank you so much for any help!

 Cheers, Amos!