Find the organization behind a MAC address or OUI prefix in the IEEE registries. No auth, no key.
Connect Remote server
claude mcp add --transport http mcp https://mac.jasontally.com/mcp
{
"mcpServers": {
"mcp": {
"url": "https://mac.jasontally.com/mcp"
}
}
}
{
"servers": {
"mcp": {
"type": "http",
"url": "https://mac.jasontally.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://mac.jasontally.com/mcp
Tools 1 found in our last check
lookupResolve 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 administere…
Details
| Endpoint | https://mac.jasontally.com/mcp (Streamable HTTP) |
| First published | 2 Oct 2026 |
| Last updated | 2 Oct 2026 |
| Registry name | com.jasontally.mac/mcp |
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