Every API, one clean contract.

Coordinates OR postal code → EU/EFTA/candidate statistical regions: country, NUTS 0-3 hierarchy, LAU commune (GISCO NUTS-2024 + LAU-2024 + TERCET pc2025).

{
  "lat": 52.52,
  "lon": 13.405
}

Türkiye: koordinat, posta kodu VEYA il/ilçe/mahalle adı → resmî idari hiyerarşi (il+plaka, ilçe, mahalle/köy, posta kodları) + NUTS-TR istatistik kodları.

{
  "lat": 41.0082,
  "lon": 28.9784
}

India: PIN code OR post-office name → post offices, district, state, lat/lon centroid (official All-India Pincode Directory).

{
  "pincode": "400001"
}

United States: ZIP code OR coordinates → state, county + 5-digit county FIPS, place, ZIP centroid, and the CGAZ state/county boundary. Built WITHOUT census.gov (GeoNames ZIP directory carries county FIPS; ANSI state-FIPS is a public-domain constant). For census-grade ZCTA + tract/block GEOIDs use the `us_census` action (TIGER/ZCTA polygons + Census Geocoder, gov-pending/91).

{
  "postal_code": "10001"
}

United States census-grade geocode: street ADDRESS, ZIP, or coordinates → state, county (+5-digit FIPS), census TRACT GEOID, census BLOCK GEOID, ZCTA, and tract/ZCTA land-area — with match_type + confidence. Coordinates/ZIP resolve the ZCTA offline from pinned TIGER/ZCTA-2024 polygons (zero egress); the authoritative tract/block GEOID + address geocoding come from the US Census Geocoder, cached. US-Gov public domain (Title 17 §105).

{
  "lat": 40.7505,
  "lon": -73.9967,
  "live": false
}

GLOBAL coordinates → administrative boundary hierarchy ADM0/ADM1/ADM2 (geoBoundaries CGAZ composite, CC-BY 4.0).

{
  "lat": 35.6762,
  "lon": 139.6503
}

country + postal code → region metadata for ~100 countries (GeoNames postal directory) with country-specific enrichment (EU→NUTS3, TR→mahalle, IN→offices).

{
  "country": "FR",
  "postal_code": "75001"
}

country + city/place → its postal codes (zip-by-city); country + admin1 only → that state's codes (zip-by-state); country only → the country's states/regions list (GeoNames directory).

{
  "country": "DE",
  "place": "München",
  "limit": 10
}

Great-circle distance between two postal codes (same or different countries).

{
  "country": "US",
  "from": "10001",
  "to": "90210"
}

All postal codes within a radius of a postal code (centroid-based).

{
  "country": "DE",
  "postal_code": "10115",
  "radius_km": 3
}

Resolve up to 50 mixed lookups in one call (cheap local queries).

{
  "items": [
    {
      "action": "eu_regions",
      "lat": 48.8566,
      "lon": 2.3522
    },
    {
      "action": "postal_lookup",
      "country": "TR",
      "postal_code": "34710"
    }
  ]
}