Free reference tables for ISO codes, time zones, dialing codes, HTTP status codes, and more. All data is public domain.
RefTables provides free, accurate reference tables sourced from public-domain datasets maintained by ISO, IANA, IETF, IUPAC, and other open international bodies. No registration required. No data collected. Just the facts.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
Complete reference table with definitions and examples.
All data is sourced from public-domain and open-license standards: ISO 3166/4217 (country and currency codes), IANA Time Zone Database, IETF RFCs (HTTP status codes), IUPAC (chemical elements), BIPM (SI prefixes), NATO/ICAO (phonetic alphabet), and ITU (dialing codes).
Yes. All data published on RefTables is from public-domain sources. You are free to use the facts themselves (facts are not copyrightable). Always cite the original standard when using in professional or academic contexts.
Reference data (ISO codes, time zones, etc.) is updated when the relevant governing body publishes changes. ISO country codes change infrequently - typically fewer than five changes per year.
Use your browser's built-in search (Ctrl+F or Cmd+F) to instantly locate any code, name, or value in the table. All tables are plain HTML for fast, accessible searching.