Country Code Lookup (ISO 3166)
Country lookup: find a country or territory by ISO 3166-1 alpha-2, alpha-3 or numeric code, or by name, and get the other codes, the official and common English names, the UN M49 region and sub-region, the currencies in use, the country-code TLD, and optionally the full ISO 3166-2 subdivision list with each subdivision's type. Also resolves an ISO 3166-2 subdivision code such as NL-NH directly. Names are matched case- and accent-insensitively.
Offering
- Provider
- api.duoleads.com
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Location And Travel
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://api.duoleads.com/v1/ref/country- MIME type
- application/json
- First seen
- 2026-10-16T01:50:38.788Z
- Last seen
- Tags
- Country, country-code, iso-3166, countries, ref
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.05 USDC
Atomic price: 50000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "50000",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39"
}
]Observed health
- Status
- Healthy
- Latest latency
- 2002 ms
- Average latency
- 915 ms
- HTTP status
- 402
- Last checked
- Reachability
- 92.3% over 13 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"code": {
"type": "string",
"description": "ISO 3166-1 alpha-2, alpha-3 or numeric code, or an ISO 3166-2 subdivision code such as NL-NH.",
"maxLength": 16
},
"name": {
"type": "string",
"description": "Substring search on country names, case- and accent-insensitive.",
"maxLength": 128
},
"include": {
"type": "string",
"description": "Comma-separated: subdivisions, m49, currency, tld. Default m49,currency,tld.",
"maxLength": 64,
"default": "m49,currency,tld"
}
},
"required": []
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"code": {
"description": "ISO 3166-1 alpha-2, alpha-3 or numeric code, or an ISO 3166-2 subdivision code such as NL-NH.",
"maxLength": 16,
"type": "string"
},
"include": {
"default": "m49,currency,tld",
"description": "Comma-separated: subdivisions, m49, currency, tld. Default m49,currency,tld.",
"maxLength": 64,
"type": "string"
},
"name": {
"description": "Substring search on country names, case- and accent-insensitive.",
"maxLength": 128,
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"alpha_2": {
"type": "string"
},
"alpha_3": {
"type": "string"
},
"currencies": {
"items": {
"type": "string"
},
"type": "array"
},
"found": {
"type": "boolean"
},
"kind": {
"type": "string"
},
"m49": {
"properties": {
"intermediate": {
"type": [
"string",
"null"
]
},
"intermediate_name": {
"type": [
"string",
"null"
]
},
"region": {
"type": [
"string",
"null"
]
},
"region_name": {
"type": [
"string",
"null"
]
},
"subregion": {
"type": [
"string",
"null"
]
},
"subregion_name": {
"type": [
"string",
"null"
]
}
},
"required": [
"region",
"region_name",
"subregion",
"subregion_name",
"intermediate",
"intermediate_name"
],
"type": "object"
},
"matches": {
"items": {
"properties": {
"alpha_2": {
"type": "string"
},
"alpha_3": {
"type": "string"
},
"name": {
"type": "string"
},
"numeric": {
"type": "string"
}
},
"required": [
"alpha_2",
"alpha_3",
"numeric",
"name"
],
"type": "object"
},
"type": "array"
},
"name": {
"type": "string"
},
"numeric": {
"type": "string"
},
"official_name": {
"type": "string"
},
"subdivision": {
"properties": {
"code": {
"type": "string"
},
"name": {
"type": "string"
},
"parent": {
"type": [
"string",
"null"
]
},
"type": {
"type": "string"
}
},
"required": [
"code",
"name",
"type",
"parent"
],
"type": "object"
},
"subdivision_count": {
"type": "integer"
},
"subdivisions": {
"items": {
"properties": {
"code": {
"type": "string"
},
"name": {
"type": "string"
},
"parent": {
"type": [
"string",
"null"
]
},
"type": {
"type": "string"
}
},
"required": [
"code",
"name",
"type",
"parent"
],
"type": "object"
},
"type": "array"
},
"tld": {
"items": {
"type": "string"
},
"type": "array"
},
"total_matches": {
"type": "integer"
}
},
"required": [
"found"
],
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/ref/country"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}