Eurotech S.p.A.

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix00:80:66:00:00:00 /24

Vendor addressVia Fratelli Solari 3/A Amaro Udine GB 33020

RegisteredSep 8, 2000

Block range00:80:66:00:00:00– 00:80:66:FF:FF:FF

Address capacity16,777,216

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Ownership timeline

Sep 8, 2000 – Oct 1, 2023 ARCOM CONTROL SYSTEMS, LTD. name changedaddress changed
Oct 1, 2023 – Oct 3, 2023 Eurotech S.p.A. name changedaddress changed
Oct 3, 2023 – Oct 4, 2023 ARCOM CONTROL SYSTEMS, LTD. name changedaddress changed
Oct 4, 2023 – Oct 5, 2023 Eurotech S.p.A. name changedaddress changed
Oct 5, 2023 – Oct 6, 2023 ARCOM CONTROL SYSTEMS, LTD. name changedaddress changed
Oct 6, 2023 – Oct 9, 2023 Eurotech S.p.A. name changedaddress changed
Oct 9, 2023 – Oct 15, 2023 ARCOM CONTROL SYSTEMS, LTD. name changedaddress changed
Oct 15, 2023 – Oct 18, 2023 Eurotech S.p.A. name changedaddress changed
Oct 18, 2023 – Oct 20, 2023 ARCOM CONTROL SYSTEMS, LTD. name changedaddress changed
Oct 20, 2023 – present Eurotech S.p.A.

Example addresses in this block

00:80:66:00:00:00 00:80:66:7F:FF:FF 00:80:66:FF:FF:FF

Where this block sits

Previous 00:80:65:00:00:00 /24 CYBERGRAPHIC SYSTEMS PTY LTD. Next 00:80:67:00:00:00 /24 SQUARE D COMPANY

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Eurotech S.p.A. holds 1 registered blocks in the IEEE registry, ranking #12,227 of 33,427 organizations by block count.