If you're looking for contact information of businesses or individuals in Peru, Páginas Blancas (White Pages) can be a useful resource. However, the specific website or service might have changed over time.
: For older, "vintage" versions of the paper directory (which are often sought after for historical research or "detailed paper" aesthetics), listings can sometimes be found on marketplaces like Mercado Libre Peru Search Tips for Peru : When searching for individuals, having their paginas+blancas+peru