XIRCOM

3 blocks

Every MAC/OUI block IEEE has registered to this exact organization name, combined.

Registered nameXIRCOM

Total assignments3

Total address capacity50,331,648

First tracked hereAug 22, 2026

Last changed hereAug 22, 2026

SourceIEEE Registration Authority

Vendor registration identifies the organization holding a block, not a specific device model, product line, or manufacturing date. This page combines every block IEEE has registered under this exact organization name; it doesn't mean every address in every listed block is currently shipping in a real device.

About XIRCOM

Xircom made PC card network adapters. Its blocks appear on older laptop network cards.

Devices that use these prefixes

Legacy PC card network adapters

Assignments by type

Type	Count
MA-L	3

Countries in IEEE's registration records

Country	Blocks
🇺🇸 United States	3

Download this organization's blocks

Get just these assignments as CSV or JSON, generated fresh from the live registry on every request.

3 registered prefixes

Prefix Type

00:05:3C:00:00:00 /24 MA-L 00:10:A4:00:00:00 /24 MA-L 00:80:C7:00:00:00 /24 MA-L