macadress

Hewlett Packard

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix78:E7:D1:00:00:00 /24
Vendor address11445 Compaq Center Drive Houston US 77070
Country🇺🇸  United States
RegisteredJan 23, 2010
Block range78:E7:D1:00:00:00– 78:E7:D1: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. Jan 23, 2010 – Jun 14, 2011 Hewlett Packard name changed
  2. Jun 14, 2011 – Oct 10, 2015 Hewlett-Packard Company name changedaddress changed
  3. Oct 10, 2015 – present Hewlett Packard

Dates show when a change became public in the IEEE registry. How we track ownership history →

Example addresses in this block

78:E7:D1:00:00:00 78:E7:D1:7F:FF:FF 78:E7:D1:FF:FF:FF

Where this block sits

Hewlett Packard holds 150 registered blocks in the IEEE registry, ranking #25 of 33,498 organizations by block count.

Other blocks registered to Hewlett Packard

00:01:E6:00:00:00 /24 MA-L 00:01:E7:00:00:00 /24 MA-L 00:02:A5:00:00:00 /24 MA-L 00:04:EA:00:00:00 /24 MA-L 00:08:02:00:00:00 /24 MA-L 00:08:83:00:00:00 /24 MA-L 00:08:C7:00:00:00 /24 MA-L 00:0A:57:00:00:00 /24 MA-L 00:0B:CD:00:00:00 /24 MA-L 00:0D:9D:00:00:00 /24 MA-L 00:0E:7F:00:00:00 /24 MA-L 00:0E:B3:00:00:00 /24 MA-L