UK postcode lookup
UK postcode lookup: coordinates, country, region, local authority, ward, parish, parliamentary constituency, LSOA/MSOA and official ONS codes. Pass ?postcode=SW1A1AA, or ?lat=51.5&lon=-0.12 to find the nearest postcodes. Official ONS data via postcodes.io.
Answeringour last check, 2026-09-28
1 of 1checks answered this week
21 msmedian answer time
$0.003listed price per call
$0.003price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://aayatai.com/uk/postcode
| Category | Everything else |
|---|---|
| Provider host | aayatai.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.003 | 21 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"postcode": "SW1A 1AA"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"lat": {
"description": "Latitude, for a nearest-postcode search.",
"maximum": 61,
"minimum": 49,
"type": "number"
},
"lon": {
"description": "Longitude, for a nearest-postcode search.",
"maximum": 3,
"minimum": -9,
"type": "number"
},
"postcode": {
"description": "Full UK postcode (spaces optional).",
"maxLength": 10,
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"found": {
"type": "boolean"
},
"licence": {
"type": "string"
},
"results": {
"description": "One postcode, or the nearest ones for a lat/lon search.",
"items": {
"type": "object"
},
"type": "array"
}
},
"required": [
"found",
"results",
"licence"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}