Getting a number from an address

I’m a Canadian returning to Taipei after an absence of a couple of years.

I’d like to go back to the apt. building where I used to live, in Wanhua, and stay there for a couple of months. I still remember the address; but i forgot the phone number of the landlady who is in charge of the building.

I’m asking/wishing if anyone knows of a service where you can provide an address and get a phone number… is there one in Taipei city? Do people living in Taipei just dial 411 or an equivalent number? or is there a WEBSITE which i could access over her?

Or is this just a pipe dream??

Help me out… please…

Send the address to a Real Estate/ House Finder firm in Taipei with your query.
They can access the information very quickly.