Converts subnet masks like 255.255.255.0 to CIDR notation (/24). Access via MCP in Cursor or Windsurf for network calculations, or hit the REST endpoint at /v1/ip/netmask-to-cidr. Essential for network automation scripts and IP configuration tools. Returns precise prefix lengths without guesswork.
curl "https://tinyfn.io/v1/ip/netmask-to-cidr" \
-H "X-API-Key: YOUR_API_KEY"const response = await fetch('https://tinyfn.io/v1/ip/netmask-to-cidr', {
headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);import requests
response = requests.get('https://tinyfn.io/v1/ip/netmask-to-cidr',
headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's ip address tools:
{
"mcpServers": {
"tinyfn-ip": {
"url": "https://tinyfn.io/mcp/ip",
"headers": {
"X-API-Key": "YOUR_API_KEY"
}
}
}
}Pass the netmask as a parameter - it returns /20 since 255.255.240.0 represents 20 consecutive 1-bits in binary.
The tool validates that subnet masks have consecutive 1-bits followed by consecutive 0-bits, rejecting invalid patterns that aren't proper netmasks.
Yes, call it directly in Cursor or Claude Code when writing network automation scripts - no need to memorize CIDR conversions or use external calculators.
Supports dotted decimal notation (255.255.255.0) and returns CIDR prefixes from /0 to /32 for IPv4 networks.
This specifically converts subnet masks to prefix lengths, while IP-to-CIDR tools typically convert IP addresses with their associated network masks to CIDR blocks.
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