MAC Address Lookup
Working · 1.2 sFind the organization behind a MAC address or OUI prefix in the IEEE registries. No auth, no key.
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lookup Read-only
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 have no registered organization.
MAC address or OUI prefix, 6 to 12 hex characters. Accepts colon, hyphen, Cisco dot, or plain hex, for example 8C:1F:64:AF:A4:B2 or 8C1F64.
Tools (1)
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 administered addresses usually have no registered organization.
read-only
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 have no registered organization.
| Argument | Type | Description |
|---|---|---|
| mac* | string | MAC address or OUI prefix, 6 to 12 hex characters. Accepts colon, hyphen, Cisco dot, or plain hex, for example 8C:1F:64:AF:A4:B2 or 8C1F64. |