MCP server

MAC Address Lookup

com.jasontally.mac/mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Find the organization behind a MAC address or OUI prefix in the IEEE registries. No auth, no key.

Working at last checkVerified publisher: jasontally.comAbout 184 tokens per request once connected1 tools

https://mac.jasontally.com/mcp

At a glance

Type: MCP server
Publisher: jasontally.com (verified by the MCP Registry)
Status: Working at last check
Tools: 1
Token cost: About 184 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http jasontally https://mac.jasontally.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.jasontally]
url = "https://mac.jasontally.com/mcp"

Gemini CLI

{"mcpServers":{"jasontally":{"httpUrl":"https://mac.jasontally.com/mcp"}}}

Cursor

{"mcpServers":{"jasontally":{"url":"https://mac.jasontally.com/mcp"}}}

VS Code

{"servers":{"jasontally":{"type":"http","url":"https://mac.jasontally.com/mcp"}}}

Antigravity

agy mcp add jasontally https://mac.jasontally.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"jasontally","server_url":"https://mac.jasontally.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"jasontally","server_url":"https://mac.jasontally.com/mcp"}

lookup ~184 tokens
Resolve a MAC address or OUI prefix to its registered organization using longest-prefix match across the MA-L, MA-M, MA-S, IAB, and CID registries. Reports the block type, address count, registration country, and a link to the full record page. Randomized and locally administered addresses usually h

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