Propagation delay (one way and round trip) over fibre, copper or radio for a dis
Propagation delay (one way and round trip) over fibre, copper or radio for a distance or two coordinates, plus serialization.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
316 msmedian answer time
$0.02listed price per call
$0.02price 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://network-calc.x402tookit.com/propagation-delay
| Category | Everything else |
|---|---|
| Provider host | network-calc.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.02 | 316 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"lat1": 40.7128,
"lat2": 51.5074,
"lon1": -74.006,
"lon2": -0.1278,
"medium": "fiber",
"routeFactor": 1
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"distanceKm": {
"description": "Cable or path length in km (use this, or the four coordinates)",
"type": "number"
},
"lat1": {
"description": "Start latitude (great-circle distance with lat2, lon1, lon2)",
"type": "number"
},
"lat2": {
"description": "End latitude",
"type": "number"
},
"linkMbps": {
"description": "Link speed in Mbps for serialization delay",
"type": "number"
},
"lon1": {
"description": "Start longitude",
"type": "number"
},
"lon2": {
"description": "End longitude",
"type": "number"
},
"medium": {
"description": "fiber (default), copper, vacuum or air",
"enum": [
"fiber",
"copper",
"vacuum",
"air"
],
"type": "string"
},
"packetBytes": {
"description": "Packet size in bytes for serialization delay (default 1500)",
"type": "number"
},
"routeFactor": {
"description": "Real cable length divided by great-circle distance, 1 to 3 (default 1; real routes are often 1.3 to 2)",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"distanceKm": {
"type": [
"null",
"number"
]
},
"distanceSource": {
"type": [
"null",
"string"
]
},
"linkMbps": {},
"medium": {
"type": [
"null",
"string"
]
},
"microsecondsPerKm": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"oneWayMs": {
"type": [
"null",
"number"
]
},
"packetBytes": {
"type": [
"null",
"number"
]
},
"pathKm": {
"type": [
"null",
"number"
]
},
"percentOfLightSpeed": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"refractiveIndex": {
"type": [
"null",
"number"
]
},
"roundTripMs": {
"type": [
"null",
"number"
]
},
"routeFactor": {
"type": [
"null",
"number"
]
},
"serializationMs": {},
"source": {
"type": [
"null",
"string"
]
},
"speedKmPerSecond": {
"type": [
"null",
"number"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"totalOneWayMs": {
"type": [
"null",
"number"
]
},
"vacuumOneWayMs": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}