MAC Address Lookup — Claude Code MCP server: MAC search
Find the organization registered to a MAC address or OUI prefix in IEEE registries. Use it when identifying the owner of a network address.
claude mcp add --transport http mcp https://mac.jasontally.com/mcpWhat MAC Address Lookup does
This MCP server looks up the organization associated with a MAC address or its OUI prefix, using IEEE registries as its source. It requires neither an account nor an API key. That makes it handy when you need to identify an address found in network configuration or logs.
You can connect it to Claude Code, Codex, Cursor, GitHub Copilot, and the other listed platforms. For Claude Code, run claude mcp add --transport http mac-address-lookup https://mac.jasontally.com/mcp. The connection depends on reaching the MCP server URL.
What it helps with
- identify the organization registered to a MAC address
- look up the owner of an OUI prefix
- check which organization was assigned a network address
Example prompts for the agent
- Find the organization registered to MAC address
00:1A:2B:3C:4D:5E. - Look up the owner of OUI prefix
00:1A:2B. - Check which organization registered
001A2B3C4D5E.
How to install MAC Address Lookup
Platform CLI: remote server
claude mcp add --transport http mcp https://mac.jasontally.com/mcpPlatform CLI: remote server
codex mcp add mac-address-lookup --url https://mac.jasontally.com/mcpConfig file
{
"mcpServers": {
"mac-address-lookup": {
"url": "https://mac.jasontally.com/mcp"
}
}
}Config file
{
"servers": {
"mac-address-lookup": {
"type": "http",
"url": "https://mac.jasontally.com/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http mac-address-lookup https://mac.jasontally.com/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about MAC Address Lookup
How do I install MAC Address Lookup in Claude Code?
Run claude mcp add --transport http mac-address-lookup https://mac.jasontally.com/mcp. The server connects over HTTP.
What does MAC Address Lookup do?
It checks IEEE registries to find the organization associated with a MAC address or OUI prefix. No API key or authentication is required.
Can MAC Address Lookup check a partial address?
Yes. You can query a complete MAC address or provide only its prefix.
