Whatismynetip

Subnet math, port and MAC lookups, DNS, DNSBL, TLS cert inspection, public IP. No account.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "whatismynetip": {
      "command": "npx",
      "args": [
        "-y",
        "github"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

netip-mcp

The whatismynetip.com toolbox as tools your coding agent can call. Subnet math, "what runs on this port and should it be open", MAC vendor lookups, DNS and blocklist checks, the certificate a host actually serves, and the IP the internet sees you as.

Free, MIT, no account, no telemetry. The site's own tools run in your browser; this runs the same logic next to your agent.

Install

Pin the version.

Claude Code

Terminal

claude mcp add netip -- npx -y github:labaccessnow/netip-mcp#v0.1.0

Claude Desktop, Cursor, or any client with a JSON config

config.json

{
  "mcpServers": {
    "netip": {
      "command": "npx",
      "args": ["-y", "github:labaccessnow/netip-mcp#v0.1.0"]
    }
  }
}

Docker

config.json

{
  "mcpServers": {
    "netip": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "ghcr.io/labaccessnow/netip-mcp:0.1.0"]
    }
  }
}

Node 18 or newer for the npx route. Also in the official MCP registry as io.github.labaccessnow/netip-mcp.

Tools

Tool	What it answers	Network
`subnet_calc`	Network, mask, wildcard, broadcast, host range and counts for a CIDR — IPv4 and IPv6, /31 and /32 done right	none
`ip_in_subnet`	Is this address inside that block?	none
`ip_convert`	IPv4 as dotted, integer, hex, binary — from any of them	none
`ipv6_normalize`	Expanded and RFC 5952 compressed forms, and what kind of address it is	none
`mac_lookup`	Vendor from the full IEEE registry (~40,000 assignments, bundled), plus the multicast and locally-administered bits	none
`lookup_port`	What runs on a port, and whether to expose it — 100 ports written up by hand, searchable by service	none
`dns_lookup`	A, AAAA, MX, TXT, NS, CNAME, CAA, SOA, PTR, SRV over DNS-over-HTTPS	DoH
`reverse_dns`	PTR for an IPv4 or IPv6 address	DoH
`dnsbl_check`	Five common blocklists, honest about the ones that refuse public resolvers	DoH
`tls_inspect`	The certificate a host actually serves: expiry, SANs, chain verification, protocol, cipher	direct TLS
`my_public_ip`	The address the internet sees, edge location, ASN, reverse DNS, datacenter/VPN hint	Cloudflare trace + Team Cymru DNS

lookup_port

The one I reach for most. The port pages on the site are opinionated — every port carries a verdict:

Code

Port 3389/tcp+udp — RDP (Remote Desktop Protocol)

  Category   remote access
  Software   Windows Remote Desktop Services, xrdp, FreeRDP server, Windows Admin Center hosts
  Exposure   NEVER — do not expose to the internet

Internet-facing RDP is the most common initial-access route for ransomware crews, who
credential-stuff it around the clock; put it behind WireGuard, Tailscale or an RD Gateway …

Ask by number, or search: lookup_port with query: "redis" finds 6379. detail: true adds the full write-up and FAQ.

What it does not do

No account, no signup, no key.
No telemetry. Nothing about your usage goes anywhere.
Nothing of yours is read from disk. The only file it opens is its own bundled OUI table.
The local tools never open a socket. The network tools talk only to public services — Cloudflare and Google's DNS-over-HTTPS resolvers, Cloudflare's trace endpoint, Team Cymru's ASN DNS, and whichever host you point tls_inspect at. tls_inspect refuses anything that resolves to private or reserved space, so it cannot be turned on your own network.
"Is my port reachable from outside?" needs a machine outside your NAT to try the connection. That is what whatismynetip.com/port-checker does; a local tool cannot.

The port data and the calculators are the same ones the site uses, so the two stay in step.

Licence

MIT. Written by James Son — network, security, and automation engineer. Corrections and additions to the port write-ups are welcome.

Read the full README →View source on GitHub →

Related MCP Servers

View all in Developer Tools View all alternatives

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Whatismynetip

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "whatismynetip": { "command": "npx", "args": ["-y", "whatismynetip"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/whatismynetip?style=directory)](https://allmcps.com/mcp/whatismynetip)

HTML Embed

<a href="https://allmcps.com/mcp/whatismynetip"><img src="https://allmcps.com/api/badge/whatismynetip?style=directory" alt="Whatismynetip on AllMCPs" /></a>

Technical Specs & Signals

CategoryDeveloper Tools

36Quality signal: Fair · 36/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools16/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

★ Featured

Moxie Docs MCP

MCP & Agent Skills for Automated Documentation, and codebase conventions + context

Explore Server →

Own this project?

This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to unlock edit access and the Official badge — proof is checked automatically, then reviewed by our team.

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Whatismynetip →Install in Claude Desktop Install in Cursor Install in VS Code

Whatismynetip

Subnet math, port and MAC lookups, DNS, DNSBL, TLS cert inspection, public IP. No account.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "whatismynetip": {
      "command": "npx",
      "args": [
        "-y",
        "github"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

netip-mcp

Free, MIT, no account, no telemetry. The site's own tools run in your browser; this runs the same logic next to your agent.

Install

Pin the version.

Claude Code

Terminal

claude mcp add netip -- npx -y github:labaccessnow/netip-mcp#v0.1.0

Claude Desktop, Cursor, or any client with a JSON config

config.json

{
  "mcpServers": {
    "netip": {
      "command": "npx",
      "args": ["-y", "github:labaccessnow/netip-mcp#v0.1.0"]
    }
  }
}

Docker

config.json

{
  "mcpServers": {
    "netip": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "ghcr.io/labaccessnow/netip-mcp:0.1.0"]
    }
  }
}

Node 18 or newer for the npx route. Also in the official MCP registry as io.github.labaccessnow/netip-mcp.

Tools

Tool	What it answers	Network
`subnet_calc`	Network, mask, wildcard, broadcast, host range and counts for a CIDR — IPv4 and IPv6, /31 and /32 done right	none
`ip_in_subnet`	Is this address inside that block?	none
`ip_convert`	IPv4 as dotted, integer, hex, binary — from any of them	none
`ipv6_normalize`	Expanded and RFC 5952 compressed forms, and what kind of address it is	none
`mac_lookup`	Vendor from the full IEEE registry (~40,000 assignments, bundled), plus the multicast and locally-administered bits	none
`lookup_port`	What runs on a port, and whether to expose it — 100 ports written up by hand, searchable by service	none
`dns_lookup`	A, AAAA, MX, TXT, NS, CNAME, CAA, SOA, PTR, SRV over DNS-over-HTTPS	DoH
`reverse_dns`	PTR for an IPv4 or IPv6 address	DoH
`dnsbl_check`	Five common blocklists, honest about the ones that refuse public resolvers	DoH
`tls_inspect`	The certificate a host actually serves: expiry, SANs, chain verification, protocol, cipher	direct TLS
`my_public_ip`	The address the internet sees, edge location, ASN, reverse DNS, datacenter/VPN hint	Cloudflare trace + Team Cymru DNS

lookup_port

The one I reach for most. The port pages on the site are opinionated — every port carries a verdict:

Code

Port 3389/tcp+udp — RDP (Remote Desktop Protocol)

  Category   remote access
  Software   Windows Remote Desktop Services, xrdp, FreeRDP server, Windows Admin Center hosts
  Exposure   NEVER — do not expose to the internet

Internet-facing RDP is the most common initial-access route for ransomware crews, who
credential-stuff it around the clock; put it behind WireGuard, Tailscale or an RD Gateway …

Ask by number, or search: lookup_port with query: "redis" finds 6379. detail: true adds the full write-up and FAQ.

What it does not do

No account, no signup, no key.
No telemetry. Nothing about your usage goes anywhere.
Nothing of yours is read from disk. The only file it opens is its own bundled OUI table.
The local tools never open a socket. The network tools talk only to public services — Cloudflare and Google's DNS-over-HTTPS resolvers, Cloudflare's trace endpoint, Team Cymru's ASN DNS, and whichever host you point tls_inspect at. tls_inspect refuses anything that resolves to private or reserved space, so it cannot be turned on your own network.
"Is my port reachable from outside?" needs a machine outside your NAT to try the connection. That is what whatismynetip.com/port-checker does; a local tool cannot.

The port data and the calculators are the same ones the site uses, so the two stay in step.

Licence

MIT. Written by James Son — network, security, and automation engineer. Corrections and additions to the port write-ups are welcome.

Read the full README →View source on GitHub →

Related MCP Servers

View all in Developer Tools View all alternatives

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Whatismynetip

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "whatismynetip": { "command": "npx", "args": ["-y", "whatismynetip"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/whatismynetip?style=directory)](https://allmcps.com/mcp/whatismynetip)

HTML Embed

<a href="https://allmcps.com/mcp/whatismynetip"><img src="https://allmcps.com/api/badge/whatismynetip?style=directory" alt="Whatismynetip on AllMCPs" /></a>

Technical Specs & Signals

CategoryDeveloper Tools

36Quality signal: Fair · 36/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools16/30

Adoption & activity1/15

Community engagement0/10

★ Featured

Moxie Docs MCP

MCP & Agent Skills for Automated Documentation, and codebase conventions + context

Explore Server →

Own this project?

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Whatismynetip →Install in Claude Desktop Install in Cursor Install in VS Code