api.duoleads.com

https://api.duoleads.com/v1/ref/airport

Shares a payout wallet with 32 other endpoints — its adoption is attributed from that shared wallet's traffic, not earned exclusively.

Look up an airport by IATA or ICAO code and get its name, city, country, ISO 3166-2 region code, WGS-84 coordinates and elevation, or find the nearest airports to a coordinate within a radius. Covers every airport worldwide that holds a three-letter IATA code and scheduled service. Returns the code type that matched and the distance in kilometres for proximity results. Time zones are not included.

58
reliability

Reliability & health

Uptime and response time from our own unpaid probes, plus the reliability score built from them.

7 days 30 days

Uptime

100.0% avg
0% 50% 100% Sep 29Oct 1Oct 3Oct 5

Response time

p50 9ms · p95 17ms
0ms 50ms 100ms Sep 29Oct 1Oct 3Oct 5
Data table
Reliability history per time bucket over the last 30 days (daily).
Bucket Uptime Probes Response time
9/29/2026, 12:00:00 AM 100% 8 8ms
9/30/2026, 12:00:00 AM 100% 12 9ms
10/1/2026, 12:00:00 AM 100% 12 10ms
10/2/2026, 12:00:00 AM 100% 12 8ms
10/3/2026, 12:00:00 AM 100% 13 8ms
10/4/2026, 12:00:00 AM 100% 10 12ms
10/5/2026, 12:00:00 AM 100% 6 12ms
58
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
100

How often it was reachable when we probed it (weight 35%).

Latency
100

How quickly it answers when it is up — fast scores high (weight 20%).

Security
100

Whether it serves over working TLS / https (weight 15%).

Transparency
61

Whether the operator disclosed what it does — description, schema, identity (weight 15%).

Activity
1

Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).

Confidence 100% — how much probe evidence backs this score. A thin history is flagged, not hidden.

See the scoring methodology for exactly how each number is computed.

Payment

Currencies
USDC
Networks
base
Facilitator
unknown
SDK
unknown

Operator

Company
inferred — unknown
Jurisdiction
—
Registrar
Key-Systems GmbH
Domain registered
2020-10-29
Hosting network
CLOUDFLARENET
Hosting country
—

Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.

On-chain activity (base)

138
payments (30d)
6.9
USD volume (30d)
2
paying wallets (30d)

Payments per day

last payment 10/2/2026
0 30 60 Sep 28Sep 29Oct 1Oct 2
Data table
Settled payments per day.
Day Payments Volume (USD) Paying wallets
9/28/2026 49 2.45 1
9/29/2026 55 2.75 1
10/1/2026 33 1.65 1
10/2/2026 1 0.05 1

This payout wallet is shared: figures cover all 33 endpoints paid at it, since payments cannot be attributed to one of them. Only payments settled on chains and facilitators we index.

Linked by wallet — likely same operator

On-chain agent identity and the x402 endpoint that shares its settlement wallet.

https://api.duoleads.com/v1/code/semver x402 endpoint https://api.duoleads.com/v1/time/dst x402 endpoint https://api.duoleads.com/v1/num/allocate x402 endpoint https://api.duoleads.com/v1/geo/geohash x402 endpoint https://api.duoleads.com/v1/chain/address x402 endpoint https://api.duoleads.com/v1/ref/country x402 endpoint https://api.duoleads.com/v1/num/stats x402 endpoint https://api.duoleads.com/v1/time/business-days x402 endpoint https://api.duoleads.com/v1/code/url x402 endpoint https://api.duoleads.com/v1/text/transliterate x402 endpoint https://api.duoleads.com/v1/chain/selector x402 endpoint https://api.duoleads.com/v1/ref/nuts x402 endpoint https://api.duoleads.com/v1/code/idn x402 endpoint https://api.duoleads.com/v1/id/national x402 endpoint https://api.duoleads.com/v1/num/radix x402 endpoint https://api.duoleads.com/v1/code/hash x402 endpoint https://api.duoleads.com/v1/geo/polygon x402 endpoint https://api.duoleads.com/v1/text/similarity x402 endpoint https://api.duoleads.com/v1/id/iban x402 endpoint https://api.duoleads.com/v1/id/iban-build x402 endpoint https://api.duoleads.com/v1/code/jwt x402 endpoint https://api.duoleads.com/v1/geo/pluscode x402 endpoint https://api.duoleads.com/v1/text/unicode x402 endpoint https://api.duoleads.com/v1/geo/distance x402 endpoint https://api.duoleads.com/v1/time/rrule x402 endpoint https://api.duoleads.com/v1/id/security x402 endpoint https://api.duoleads.com/v1/time/zone x402 endpoint https://api.duoleads.com/v1/text/slug x402 endpoint https://api.duoleads.com/v1/id/gs1 x402 endpoint https://api.duoleads.com/v1/time/calendar x402 endpoint https://api.duoleads.com/v1/num/words x402 endpoint https://api.duoleads.com/v1/ref/currency x402 endpoint
Response schema 
{
  "properties": {
    "data": {
      "description": "found, matched_on (iata|icao), airport {iata, icao, name, municipality, country, region, lat, lon, elevation_ft (number|null, null when OurAirports has no elevation, 129 airports), type, timezone}, nearby (for near: the same plus distance_km and bearing_deg, nearest first; distance is haversine on a 6,371.0088 km sphere, bearing is the initial bearing in degrees from the query point; matched_on is absent). A code matches IATA (3 characters) first, then ICAO/local identifier. found is false for an unknown code or an empty nearby list. timezone is the IANA zone of the airport location, derived offline at build time from its coordinates (timezone-boundary-builder 2026d); it is the geographic zone, not an airline convention (Xinjiang airports read Asia/Urumqi, UTC+6, although flights run on Beijing time). Coordinates on a zone border can resolve to the neighbouring zone (Gold Coast OOL reads Australia/Sydney).",
      "properties": {
        "airport": {
          "properties": {
            "country": {
              "type": "string"
            },
            "elevation_ft": {
              "type": [
                "number",
                "null"
              ]
            },
            "iata": {
              "type": "string"
            },
            "icao": {
              "type": "string"
            },
            "lat": {
              "type": "number"
            },
            "lon": {
              "type": "number"
            },
            "municipality": {
              "type": "string"
            },
            "name": {
              "type": "string"
            },
            "region": {
              "type": "string"
            },
            "timezone": {
              "type": "string"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "iata",
            "icao",
            "name",
            "municipality",
            "country",
            "region",
            "lat",
            "lon",
            "elevation_ft",
            "type",
            "timezone"
          ],
          "type": "object"
        },
        "found": {
          "type": "boolean"
        },
        "matched_on": {
          "type": "string"
        },
        "nearby": {
          "items": {
            "properties": {
              "bearing_deg": {
                "type": "number"
              },
              "country": {
                "type": "string"
              },
              "distance_km": {
                "type": "number"
              },
              "elevation_ft": {
                "type": [
                  "number",
                  "null"
                ]
              },
              "iata": {
                "type": "string"
              },
              "icao": {
                "type": "string"
              },
              "lat": {
                "type": "number"
              },
              "lon": {
                "type": "number"
              },
              "municipality": {
                "type": "string"
              },
              "name": {
                "type": "string"
              },
              "region": {
                "type": "string"
              },
              "timezone": {
                "type": "string"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "iata",
              "icao",
              "name",
              "municipality",
              "country",
              "region",
              "lat",
              "lon",
              "elevation_ft",
              "type",
              "timezone",
              "distance_km",
              "bearing_deg"
            ],
            "type": "object"
          },
          "type": "array"
        }
      },
      "required": [
        "found"
      ],
      "type": "object"
    },
    "meta": {
      "$ref": "#/components/schemas/Meta"
    },
    "ok": {
      "const": true
    },
    "route": {
      "const": "/v1/ref/airport"
    },
    "version": {
      "const": "1.0.0"
    }
  },
  "required": [
    "ok",
    "route",
    "version",
    "data",
    "meta"
  ],
  "type": "object"
}