VITEC

MA-L

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

Prefix00:18:1C:00:00:00 /24

Vendor addressSt Davids House, St Davids Drive Dalgety Bay Fife GB KY11 9NB

RegisteredJun 13, 2006

Block range00:18:1C:00:00:00– 00:18:1C: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

Jun 13, 2006 – Mar 9, 2023 Exterity Limited name changedaddress changed
Mar 9, 2023 – present VITEC

Example addresses in this block

00:18:1C:00:00:00 00:18:1C:7F:FF:FF 00:18:1C:FF:FF:FF

Where this block sits

Previous 00:18:1B:00:00:00 /24 TaiJin Metal Co., Ltd. Next 00:18:1D:00:00:00 /24 ASIA ELECTRONICS CO.,LTD

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

VITEC holds 14 registered blocks in the IEEE registry, ranking #230 of 33,421 organizations by block count.

Other blocks registered to VITEC

4C:A0:03:00:00:00 /24 MA-L 00:50:C2:D8:50:00 /36 IAB 00:50:C2:E2:30:00 /36 IAB 40:D8:55:05:40:00 /36 IAB 70:B3:D5:05:E0:00 /36 MA-S 70:B3:D5:0C:A0:00 /36 MA-S 70:B3:D5:12:70:00 /36 MA-S 70:B3:D5:22:B0:00 /36 MA-S 70:B3:D5:5E:80:00 /36 MA-S 70:B3:D5:CD:A0:00 /36 MA-S 70:B3:D5:D6:10:00 /36 MA-S 70:B3:D5:DD:30:00 /36 MA-S