• VALID
  • INVALID
  • ERROR
  • HUMAN

How to verify subnet allocations with your AI

Connect this MCP to your AI client to automate network boundary checks. Your agent handles the binary math so you don't have to.

Ask AI about this page

Short answer

Can my AI check if an IP is in a specific subnet?

Yes. Your AI uses the validate_ip tool to perform bitwise comparisons between an IP address and a CIDR range. This ensures any new assignment stays inside your designated network limits.

Where every check lands.

The outcomes of your validation

The AI processes your network data and delivers these specific results.

VALID

Confirmed assignments

The AI confirms the IP is within the CIDR range. You get a clear signal that the allocation is safe.

INVALID

Boundary violations

The AI identifies IPs that fall outside your subnet. It flags these immediately to prevent routing errors.

ERROR

Malformed inputs

If you provide a broken IP or bad CIDR notation, the AI catches the syntax error. This prevents bad data from entering your system.

HUMAN

Manual review needed

When an IP is technically valid but sits on a critical boundary, the AI flags it for your final decision.

The workflow

What your AI does when a request arrives.

The AI handles the heavy lifting of network math through a single tool.

  1. Parse input

    Your agent reads the IP address and the target CIDR block from your prompt or data source.

    validate_ip

  2. Run binary math

    The AI performs the bitwise AND operations required to check the network mask.

    validate_ip

  3. Compare results

    The agent compares the calculated network address against your requested allocation.

    validate_ip

  4. Report status

    The AI tells you if the IP is a match or if it violates the subnet boundary.

    validate_ip

Try it

Copy these to start.

Use these prompts to begin validating your network assignments.

Starting points

Swap the placeholder IPs and CIDR blocks with your actual network data.

ipaddr.js Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_zdbyTTH2RDB5CnFJWeDDjQO0bXcWFXg6ibvBXePu/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — ipaddr.js capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "ip-cidr-validator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_zdbyTTH2RDB5CnFJWeDDjQO0bXcWFXg6ibvBXePu/mcp"
    }
  }
}
Copy into chat04

  • Check if 192.168.1.50 is within the 192.168.1.0/24 subnet.

  • Validate this list of IPs against the 10.0.0.0/8 range: 10.255.255.254, 10.0.0.1, 172.16.0.5.

  • Is 172.16.5.10 valid for the 172.16.0.0/12 subnet?

  • Verify if the IP in this spreadsheet cell matches the CIDR block in my notes.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect IP & CIDR Validator once, then ask.

Click the link to connect the MCP to your client. Your credentials stay encrypted and you can start asking questions immediately.

Connect IP & CIDR Validator to your AI

FAQ

How the validator behaves

  • 01

    Can the AI change my subnet settings?

    No. The AI can only validate data using the provided tool. It cannot modify your network configuration or router settings.

  • 02

    Does the AI store my IP addresses?

    No. The AI processes the data you provide in the chat session to perform the math, but it does not save your network data.

  • 03

    Can it validate IPv6 addresses?

    The tool is specifically designed for IPv4 and CIDR math.

  • 04

    Will the AI automatically assign IPs to my devices?

    No. The AI only tells you if an IP is valid for a specific range. You must perform the actual assignment yourself.

  • 05

    What happens if I provide an invalid CIDR mask?

    The tool will return an error indicating the mask is invalid, and the AI will report that the validation could not be completed.

  • More questions about IP & CIDR Validator? The Connector page answers them. See everything the IP & CIDR Validator Connector can do

Connect ipaddr.js to Claude, Cursor, ChatGPT & more