US amateur radio callsign lookup
US amateur radio callsign lookup - licence class, status, grant and expiry dates, licensee name and grid square from the FCC database
Answeringour last check, 2026-10-18
1 of 1checks answered this week
415 msmedian answer time
$0.01listed price per call
$0.01price 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://saylorinnovations.com/api/radio/callsign/:call
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | 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 |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.01 | 415 ms |
Example input (from the provider)
{
"method": "GET",
"pathParams": {
"call": "W1AW"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"pathParams": {
"properties": {
"call": {
"description": "US amateur radio callsign in the path, e.g. W1AW",
"type": "string"
}
},
"required": [
"call"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"pathParams"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"callsign": {
"description": "Aircraft callsign",
"type": "string"
},
"city": {
"description": "City",
"type": [
"string",
"null"
]
},
"expiry_date": {
"description": "Expiry date",
"type": [
"string",
"null"
]
},
"frn": {
"type": [
"string",
"null"
]
},
"grant_date": {
"description": "Grant date",
"type": [
"string",
"null"
]
},
"grid_square": {
"description": "Grid square",
"type": [
"string",
"null"
]
},
"last_action_date": {
"description": "Last action date",
"type": [
"string",
"null"
]
},
"licence_type": {
"description": "Licence type",
"type": [
"string",
"null"
]
},
"licensee": {
"type": [
"string",
"null"
]
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"operator_class": {
"description": "Operator class",
"type": [
"string",
"null"
]
},
"previous_callsign": {
"description": "Previous callsign"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"state": {
"description": "State or region",
"type": [
"string",
"null"
]
},
"status": {
"description": "Current status",
"type": "string"
},
"trustee": {
"type": [
"string",
"null"
]
},
"trustee_name": {
"description": "Trustee name",
"type": [
"string",
"null"
]
},
"uls_url": {
"description": "Uls URL",
"type": [
"string",
"null"
]
},
"zip": {
"type": [
"string",
"null"
]
}
},
"required": [
"callsign",
"status"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}