Converts CIDR notation into a complete list of individual IP addresses within that network range. Access via MCP in Cursor or Windsurf, or call GET /v1/ip/expand-cidr directly. Perfect for network analysis, security scanning, or IP validation tasks. For example, 192.168.1.0/30 expands to exactly 4 IPs including network and broadcast addresses.
curl "https://tinyfn.io/v1/ip/expand-cidr" \
-H "X-API-Key: YOUR_API_KEY"const response = await fetch('https://tinyfn.io/v1/ip/expand-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/expand-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 CIDR notation (like 10.0.0.0/24) to the expand-cidr endpoint. Returns an array of all individual IP addresses in that subnet, including network and broadcast addresses.
Large blocks like /8 contain millions of IPs and may hit response limits. Stick to /16 or smaller for practical use cases to avoid timeouts or memory issues.
Yes, the tool returns all addresses in the range including the network address (first) and broadcast address (last). For usable host IPs only, exclude the first and last addresses.
Absolutely. In Cursor or Claude Code, the MCP tool lets AI agents expand CIDRs for subnet analysis, IP scanning scripts, or firewall rule generation without manual calculation.
Returns a JSON array of strings, each containing a valid IPv4 address. Order is sequential from lowest to highest IP in the subnet range.