If you're not certain of the exact address of a site, one way to search is to use wildcard characters in the Addressing Pane.
An underscore (_) can take the place of a single unknown character (and two underscores can take the place of two characters, etc.). For instance, searching for 13__ Perdido St will return 1300 Perdido St, but searching for 13_ Perdido St will not.
The percent sign (%) can take the place of any number of characters. A search for 13% Perdido St will return 1300 Perdido St, and if there were a 132 Perdido St, that address would be returned as well.