Can I search by DPID?

Yes, you can call the Metadata API and use the DPID to specify which address you would like returned. To create this API request, use the information shown on the Metadata API information page but use the dpid parameter instead of the pxid parameter and value with the dpid parameter.

For example:

https://api.addressfinder.io/api/nz/address/metadata?key=REPLACE_WITH_YOUR_API_KEY&secret=REPLACE_WITH_YOUR_API_SECRET&format=json&dpid=2080794

Learn more, and try using a DPID on the Metadata API documentation page.