PrismKitCheatsheetsISO 3166 Country CodesISO 3166 Country CodesRuns in your browserLocalCopy linkMarkdownSearch every ISO 3166-1 country by name, alpha-2, alpha-3 or numeric code, with its flag emoji.RJ45 Wiring CheatsheetT568A and T568B pin colours, straight vs crossover cables, gigabit pairs and PoE pin usage for RJ45 Ethernet.ISO 639 Language CodesSearch all ISO 639-1 two-letter language codes with their ISO 639-2 three-letter equivalents.