# DirectoryCodes

> The directory of the world's standardized codes: 2,372 entries across 11 collections,
> compiled from official registries (IANA, ISO, OurAirports, GS1, WCO). Static reference site,
> no tracking. Every code has a stable URL; datasets are downloadable.

## Collections

- [HTTP Status Codes](https://directorycodes.com/http-status-codes/): Every response code the web can send — from 100 Continue to 511 Network Authentication Required — with plain-English meanings.
- [Country Codes](https://directorycodes.com/country-codes/): All 250 ISO 3166-1 entries: alpha-2, alpha-3 and numeric codes, plus dialing codes, internet TLDs and capitals.
- [Currency Codes](https://directorycodes.com/currency-codes/): Every active ISO 4217 currency: three-letter code, numeric code, minor units and the countries that use it.
- [Language Codes](https://directorycodes.com/language-codes/): The two-letter codes behind every lang attribute, locale and translation file — all 183 ISO 639-1 languages.
- [Airport Codes](https://directorycodes.com/airport-codes/): IATA and ICAO codes for the world's major international airports — the letters on your boarding pass and baggage tag.
- [Port Numbers](https://directorycodes.com/port-numbers/): The well-known and notable TCP/UDP ports every developer and admin meets: SSH, DNS, HTTPS, databases, mail and more.
- [Time Zone Abbreviations](https://directorycodes.com/time-zones/): CET, EST, IST, JST and the rest — the world's time-zone abbreviations with their UTC offsets and where they apply.
- [NATO Phonetic Alphabet](https://directorycodes.com/phonetic-alphabet/): Alfa to Zulu, plus digits — the international radiotelephony spelling alphabet, with Morse code for good measure.
- [Vehicle Registration Codes](https://directorycodes.com/vehicle-codes/): The oval bumper stickers: D for Germany, CH for Switzerland, RA for Argentina — international vehicle registration codes.
- [GS1 Barcode Prefixes](https://directorycodes.com/gs1-prefixes/): The first digits of every EAN barcode tell you which GS1 organization issued it — from 400–440 Germany to 978 for books.
- [HS Customs Chapters](https://directorycodes.com/hs-chapters/): The 96 chapters of the Harmonized System — the classification behind every customs declaration and tariff line in world trade.

## Data

- [Open data downloads](https://directorycodes.com/data/): every collection as JSON and CSV, free with attribution.
- Machine-readable search index: https://directorycodes.com/assets/search-index.json

## Notes

- Per-code pages exist for HTTP, countries, currencies, languages, airports, ports and phonetic
  (e.g. https://directorycodes.com/http-status-codes/404/ or https://directorycodes.com/country-codes/DE/).
- Verify against the official standard before production use; see https://directorycodes.com/legal/disclaimer/.