macadress

ASUSTek COMPUTER INC.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix1C:87:2C:00:00:00 /24
Vendor address15,Li-Te Rd.., Peitou, Taipei TW 112
Country🇹🇼  Taiwan
RegisteredApr 3, 2015
Block range1C:87:2C:00:00:00– 1C:87:2C: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

  1. Apr 3, 2015 – Jun 16, 2015 Private name changedaddress changedcountry changed
  2. Jun 16, 2015 – Sep 1, 2015 ASUSTek COMPUTER INC name changedaddress changed
  3. Sep 1, 2015 – present ASUSTek COMPUTER INC.

Example addresses in this block

1C:87:2C:00:00:00 1C:87:2C:7F:FF:FF 1C:87:2C:FF:FF:FF

Where this block sits

ASUSTek COMPUTER INC. holds 93 registered blocks in the IEEE registry, ranking #37 of 33,427 organizations by block count.

Other blocks registered to ASUSTek COMPUTER INC.

00:0C:6E:00:00:00 /24 MA-L 00:0E:A6:00:00:00 /24 MA-L 00:11:2F:00:00:00 /24 MA-L 00:11:D8:00:00:00 /24 MA-L 00:13:D4:00:00:00 /24 MA-L 00:15:F2:00:00:00 /24 MA-L 00:17:31:00:00:00 /24 MA-L 00:18:F3:00:00:00 /24 MA-L 00:1A:92:00:00:00 /24 MA-L 00:1B:FC:00:00:00 /24 MA-L 00:1D:60:00:00:00 /24 MA-L 00:1E:8C:00:00:00 /24 MA-L