Local IEEE address intelligence

What’s behind this
MAC address?

Decode a 48-bit address, find its registered organization, and understand whether it can reliably identify a device.

Try: Colons, hyphens, dots, or no separators
01

Normalize

Accept common address formats and expose the underlying 48-bit identity.

02

Attribute

Use longest-prefix matching across MA-L, MA-M, MA-S, IAB, and CID data.

03

Interpret

Detect local and group bits so randomized addresses aren’t mistaken for vendors.

Local registry

58,143 assignments across 5 datasets

Last updated 20 Jul 2026, 19:44

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