MAC Address Lookup
Find the organization behind a MAC address or OUI prefix in the IEEE registries. No auth, no key.
Connect it
Settings → Connectors → Add custom connector
URL: https://mac.jasontally.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://mac.jasontally.com/mcp{
"mcpServers": {
"mcp": {
"url": "https://mac.jasontally.com/mcp"
}
}
}claude mcp add --transport http mcp https://mac.jasontally.com/mcp{
"servers": {
"mcp": {
"type": "http",
"url": "https://mac.jasontally.com/mcp"
}
}
}1 tools, verified live
lookupread-onlyResolve 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 have no registered organization.
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