# ISO 3166 Country Code TLD and Subdivision Mapper

Look up ISO country codes, ccTLD, calling, IOC, M49, FIPS and ISO 3166-2 subdivision data

> Canonical page: https://elysiatools.com/en/tools/iso-3166-country-code-tld-and-subdivision-mapper

- **Category:** Data Processing

- **Keywords:** ISO 3166, country code, ccTLD, IOC, UN M49, FIPS, subdivision, timezone

## Overview

Uses bundled local datasets, preserves null auxiliary codes, exposes IANA timezones and returns subdivision parent relationships without network calls.

## Inputs

- **Query** (text): US, USA, .us, 840, IOC, FIPS or US-CA
- **Search Field** (select)
- **Include Subdivisions** (checkbox)
- **Result Limit** (number)

## When to use

- You need to convert a country name or code into ISO, ccTLD, calling, IOC, M49, or FIPS values.
- You need to resolve an ISO 3166-2 subdivision and identify its parent country.
- You want consistent country metadata from a local dataset without making network requests.

## How it works

- Enter a query such as "US", "USA", ".us", "840", or "US-CA".
- Choose a search field, or leave Search Field set to Auto to let the mapper identify the query type.
- Enable Include Subdivisions when subdivision data should be included in the lookup.
- Set the result limit from 1 to 50, then receive the matching records as JSON.

## Use cases

- Build country reference tables with consistent ISO, domain, calling, sports, regional, and legacy code values.
- Validate or enrich geographic data that contains mixed country identifiers such as USA, 840, .us, or US-CA.
- Resolve administrative subdivisions and connect them to their parent country in data analysis workflows.

## Frequently asked questions

### Which query formats are supported?

You can search with country names, ISO alpha-2 or alpha-3 codes, ISO numeric codes, ccTLDs, ITU calling codes, IOC codes, UN M49 codes, FIPS codes, and ISO 3166-2 subdivision codes.

### What does Auto search do?

Auto search selects the appropriate lookup behavior based on the value entered in the Query field.

### Can I look up subdivisions such as US-CA?

Yes. Select ISO 3166-2 subdivision as the search field to resolve a subdivision and its parent country relationship.

### What does the tool return?

The tool returns structured JSON country or subdivision records, including available code values and IANA timezone data.

### Does the lookup require an internet connection?

No. The mapper uses bundled local datasets and does not make network requests.

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