MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixE0:1C:A7:00:00:00 /24
Vendor address5453 Great America Parkway Santa Clara US 95054
Country🇺🇸 United States
RegisteredMay 2, 2024
Block rangeE0:1C:A7:00:00:00– E0:1C:A7: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
- May 2, 2024 – Dec 6, 2024 Arista Networks, Inc. name changed
- Dec 6, 2024 – present Arista Networks
Dates show when a change became public in the IEEE registry. How we track ownership history →
Example addresses in this block
Where this block sits
Arista Networks holds 53 registered blocks in the IEEE registry, ranking #67 of 33,498 organizations by block count.
Other blocks registered to Arista Networks
00:1C:73:00:00:00 /24
MA-L
18:9C:E1:00:00:00 /24
MA-L
1C:8C:6E:00:00:00 /24
MA-L
28:99:3A:00:00:00 /24
MA-L
28:E7:1D:00:00:00 /24
MA-L
2C:DD:E9:00:00:00 /24
MA-L
38:2C:DB:00:00:00 /24
MA-L
38:38:A6:00:00:00 /24
MA-L
44:4C:A8:00:00:00 /24
MA-L
4C:09:97:00:00:00 /24
MA-L
50:45:D7:00:00:00 /24
MA-L
54:0F:2C:00:00:00 /24
MA-L