Timor-Leste ISO Codes: TL, TLS, 626, and .tl

The Timor-Leste ISO codes are straightforward once the code system is clear: TL is the two-letter code, TLS is the three-letter code, and 626 is the numeric code. These identifiers appear in online forms, datasets, shipping and travel systems, software, and international records. They are not interchangeable with the .tl internet domain, the +670 telephone calling code, or USD, the currency code used for the United States dollar. This guide explains which Timor-Leste country abbreviation to use for each task, including how to recognize older East Timor records.

Timor-Leste ISO 3166-1 Codes at a Glance

ISO 3166-1 provides standardized identifiers for countries and territories. For current country fields and modern data, use the codes assigned to Timor-Leste, rather than older East Timor abbreviations.

Timor-Leste's Two-Letter, Three-Letter, and Numeric Codes

Timor-Leste has three main ISO 3166-1 identifiers. Each identifies the same country, but each has a different format and is used by different systems. A country-code listing from IBAN country codes records Timor-Leste as TL, TLS, and 626.

These values identify the same country, but they are not interchangeable field values. A two-character validator will reject TLS and 626, while a statistical interface that requires the numeric format may reject TL. Read the field label or specification before entering the value, especially when copying data between a Timor-Leste address form and an international reporting file.

The most common Timor-Leste two-letter country code is TL. If a field requests a three-letter ISO country code, enter TLS. If it requests a numeric country code, use 626. Do not assume that a field accepts all three formats simply because they refer to the same country.

What Each ISO Code Format Is Used For

Alpha-2 codes are designed for compact country identification. You will often see TL in account profiles, address forms, customer relationship systems, country drop-down menus, and software settings. The two-letter format also has an important relationship with country-code internet domains, although a domain suffix and a database country field do different jobs.

Alpha-3 codes provide more visual distinction where two letters may be unclear. TLS can be useful in international datasets, reports, import and export files, and applications that display standardized country abbreviations. A developer should use it only where the documentation specifies ISO 3166-1 alpha-3.

Numeric code 626 is useful when systems must avoid differences in language, spelling, or country-name formatting. It is common in statistical processing and structured data exchange. For example, a record that stores country code 626 can be matched by number even when one source writes Timor-Leste and an older source uses East Timor. This does not make 626 a telephone prefix or a currency identifier.

The .tl Internet Domain for Timor-Leste

The .tl suffix is Timor-Leste's country-code top-level domain, often called a ccTLD. It is relevant to web addresses and the domain name system, not to the country-code fields in every application.

How .tl Relates to the ISO Alpha-2 Code TL

The .tl country-code top-level domain is associated with the ISO alpha-2 identifier TL. It may appear in websites for public institutions, businesses, organizations, and services connected with Timor-Leste. For example, a web address ending in .tl uses a domain suffix, while an online booking form that asks for a country code may require TL instead.

The relationship between TL and .tl is close, but their technical functions are different. ISO country codes classify countries in data systems. Domain suffixes are part of the DNS infrastructure that directs internet names. A .tl address alone does not prove that a website is operated in Timor-Leste, serves only local users, or is hosted there.

IANA lists .TL as the country-code top-level domain and identifies Timor-Leste's national communications authority as the manager in its IANA .TL delegation record. Before registering, transferring, or moving a .tl domain, check the current registry instructions and eligibility requirements. Domain rules, registrar options, and transfer procedures can change and should be confirmed for the specific transaction.

ISO Codes Versus Timor-Leste's Other International Identifiers

Many international identifiers use short letters or numbers, but they are issued for different purposes. Identifying the organization and field label is the safest way to choose the correct Timor-Leste code.

ISO Country Codes Versus the International Calling Code +670

+670 is Timor-Leste's international telephone calling code. It is used for telecommunications routing, such as placing a call from another country or configuring a voice or SMS service. It is not an ISO 3166-1 country code.

East Timor Dialing Code - East Timorese Country Code - Telephone Area Codes in East Timor

When dialing an international number in Timor-Leste, the calling-code format begins with +670, followed by the local number. When an application asks for a country setting, however, it will normally require TL or another explicitly named ISO format. Entering a telephone prefix into a country field can cause validation errors or incorrect data mapping.

ISO Country Codes Versus the Currency Code USD

USD is the ISO 4217 code for the United States dollar. It is a currency code, not a country code for Timor-Leste. Country and currency should always be stored as separate fields: a customer, address, or delivery destination can have country code TL, while an invoice, payment amount, or price display may use USD.

This distinction matters in checkout systems, banking records, expense claims, invoices, and travel budgets. A payment platform may need both pieces of information, but one does not determine the other. USD also does not uniquely identify Timor-Leste, because the same currency code refers to the United States dollar in other settings. Follow the payment provider's field definitions and supported-country rules rather than inferring them from the currency label.

The Olympic Code TLS and Other System-Specific Labels

The International Olympic Committee maintains its own country-code system for sports administration and competition records. Timor-Leste uses TLS as its current Olympic code. In this case, TLS matches the ISO 3166-1 alpha-3 code, which makes the label easy to recognize in medal tables, athlete profiles, and sports databases.

That match is useful, but it should not be treated as a general rule for every country. Olympic identifiers and ISO identifiers are maintained for different purposes and can differ elsewhere. A listing of IOC country codes can help identify the sports context, while the API, database schema, or form label should decide which standard applies in a particular system.

Former East Timor Codes and Legacy Records

Timor-Leste is also widely known as East Timor. Older documents, archived websites, historical datasets, and legacy software may therefore contain outdated names and codes. These records need interpretation rather than automatic replacement.

TP, TMP, and the Retired .tp Domain

TP and TMP are historical alphabetic codes associated with East Timor or Portuguese Timor. They are retired for current ISO use. For a current form, new application, or modern dataset, use TL for alpha-2 and TLS for alpha-3 unless the system specifically preserves historical coding.

The historical web suffix .tp is also retired. It belongs to the earlier designation and should be understood as archival context, not as an alternative to the current .tl domain. IANA's IANA .TP removal report describes TP as the ISO designation for Portuguese Timor and documents removal of the former top-level domain.

When searching older records, use East Timor, TP, TMP, and .tp as historical search terms where relevant. When creating new records, labels, integrations, or public-facing content, prioritize Timor-Leste, TL, TLS, 626, and .tl. This approach supports both accurate current identification and effective historical research.

Why Numeric Code 626 Matters in Historical Data

The numeric identifier 626 can help researchers and data managers investigate records across naming and alpha-code changes. A dataset may contain East Timor in older entries and Timor-Leste in newer entries. Numeric code 626 can provide a useful matching clue when the dataset follows ISO-based country coding.

It is still important to inspect a dataset's metadata, publication date, definitions, and coding standard before merging records. Not every archive applied historical changes at the same time, and some systems use their own internal identifiers. Keep the original country label and original code when auditability matters, then add a documented mapping to the current Timor-Leste identity if the project requires harmonized data.

Which Timor-Leste Code Should You Use?

The right code depends on the task and the exact field name. A short decision rule is simple: use the standard requested by the system, not the code that happens to look most familiar.

For Forms, Databases, and Software

Use TL when a form, database, API, or software setting requests an ISO 3166-1 alpha-2 country code. Use TLS when it specifically requests alpha-3. Use 626 when it requests a numeric country identifier. If the field says only “country,” select Timor-Leste from the provided list instead of entering a code unless the interface explicitly accepts one.

3 Crucial Tips of Using ISO 3166 Reference Data #iso #referencedata

For example, a customer profile might store TL in country_iso2, TLS in country_iso3, and 626 in country_numeric as separate representations of one Timor-Leste record. Keeping those fields distinct avoids accidental substitution during exports or API calls.

For software design, define the code type in the field name, schema, or validation rule. A field named country_iso2 should store TL, while country_iso3 should store TLS. Do not use a single general-purpose “country code” field without documenting its format. That design can lead to problems when another system expects an alpha-2 value but receives a telephone code or a currency code.

Legacy aliases such as East Timor, TP, and TMP can be useful for historical search and migration. Do not silently overwrite archived values where original data must remain traceable. Preserve the source value, record the mapping method, and store the current normalized code separately when needed.

For Websites, Calls, Payments, and Sports Records

For websites, use .tl only when referring to Timor-Leste's country-code domain. For a website account, shipping form, or service configuration that requests an ISO alpha-2 country setting, use TL. For international calls, use +670, not TL or TLS.

For payments and finance-related fields, use USD when the requested value is a currency code. For Olympic data or a field explicitly requesting an ISO alpha-3 identifier, use TLS. The same three letters can be valid in both Olympic and ISO alpha-3 contexts for Timor-Leste, but the field's issuing system still matters.

Conclusion

For current Timor-Leste country identification, remember the core set: TL for ISO alpha-2, TLS for ISO alpha-3, and 626 for the numeric code. Use .tl for the country-code domain, +670 for telephone routing, and USD only for a currency field. If you encounter TP, TMP, or .tp, treat them as historical East Timor identifiers and use the current codes for new work.