Convert an IPv4 start and end address into the minimal list of CIDR blocks, with
Convert an IPv4 start and end address into the minimal list of CIDR blocks, with the first and last address and size of each block
Answeringour last check, 2026-10-20
1 of 1checks answered this week
358 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/net/range-to-cidr
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.01 | 358 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"end": "10.0.1.200",
"start": "10.0.0.5"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"end": {
"description": "Last IPv4 address",
"type": "string"
},
"start": {
"description": "First IPv4 address",
"type": "string"
}
},
"required": [
"start",
"end"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"addresses": {
"description": "Addresses in the range",
"type": "number"
},
"blocks": {
"description": "Each block with first, last and size",
"items": {
"properties": {
"addresses": {
"description": "Addresses in the block",
"type": [
"number",
"null"
]
},
"cidr": {
"description": "CIDR block"
},
"first": {
"description": "First address of the block",
"type": [
"string",
"null"
]
},
"last": {
"description": "Last address of the block",
"type": [
"string",
"null"
]
}
},
"type": "object"
},
"type": "array"
},
"cidr_blocks": {
"description": "Cidr blocks",
"type": "number"
},
"cidrs": {
"description": "Minimal CIDR list covering the range",
"type": "array"
},
"end": {
"description": "Last address of the range",
"type": "string"
},
"is_single_cidr": {
"description": "True when this is single cidr",
"type": "boolean"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"start": {
"description": "First address of the range",
"type": "string"
}
},
"required": [
"cidrs",
"addresses"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}