If you are looking for for French region 258 (Doubs department), official sources include:
While some online titles suggest it might contain "postal code" information, legitimate global postal databases are usually provided by official government entities (like the USPS ZIP Code Lookup ) or established data providers like GeoPostcodes . They are rarely distributed as obscure RAR files on unofficial servers. ZIP Code™ Lookup | USPS Code postal night folder 258.rar
If you have encountered this file and are curious about its contents, follow these safety protocols: If you are looking for for French region
Recommended commands you can run locally and paste the outputs: Code postal night folder 258.rar
using an online tool like VirusTotal before extracting it.