If you take the dog in they can provide they might be able to help you. They need to verify the dog matches the information on file as well, they cannot give people's information out as you described. Go in person and they'll let you know all the options available.
Here is the number to call. They will be able to direct you on what to do. You can also take the animal to any vets office to be scanned for a microchip. The west shelter is on 27th Ave & Buckeye. 2500 S 27th Avenue Phoenix 85009.
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