CIDR subnet calculator
CIDR subnet calculator - network, broadcast, netmask, wildcard, host range and usable hosts for an IPv4 CIDR block
Answeringour last check, 2026-10-18
1 of 1checks answered this week
277 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/cidr
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.01 | 277 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"cidr": "192.168.10.37/26"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"properties": {
"cidr": {
"description": "IPv4 CIDR, e.g. 192.168.1.0/24",
"type": "string"
}
},
"required": [
"cidr"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address_class": {
"description": "Address class",
"type": [
"string",
"null"
]
},
"broadcast": {
"type": [
"string",
"null"
]
},
"checked_at": {
"description": "Time the check was run (UTC)",
"type": [
"string",
"null"
]
},
"cidr": {
"description": "CIDR block",
"type": "string"
},
"first_host": {
"description": "First host",
"type": "string"
},
"input_address": {
"description": "Input address",
"type": [
"string",
"null"
]
},
"is_private_rfc1918": {
"description": "True when this is private rfc1918",
"type": "boolean"
},
"last_host": {
"description": "Last host",
"type": "string"
},
"netmask": {
"type": "string"
},
"network": {
"description": "Network name",
"type": "string"
},
"total_addresses": {
"description": "Total addresses",
"type": "number"
},
"usable_hosts": {
"description": "Usable hosts",
"type": "number"
},
"wildcard": {
"type": "string"
}
},
"required": [
"network",
"netmask",
"usable_hosts"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}