MAC Address Lookup

Cisco Systems, Inc B4:A4:E3

B4:A4:E3 is a 24-bit MA-L MAC address block registered to Cisco Systems, Inc in US.

Vendor

Cisco Systems, Inc

MA-L · 24-bit
B4:A4:E3

Unicast · Universally administered (U/L bit clear)

Matched prefix
B4:A4:E3
Match
MA-L assignment
Address range
B4:A4:E3:00:00:00 – B4:A4:E3:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
80 West Tasman Drive San Jose CA US 94568
First registered
Jul 8, 2010

Formats

  • Plain hex B4A4E3
  • Colon-separated B4:A4:E3
  • Hyphen-separated B4-A4-E3
  • Cisco dot notation B4A4.E3

Prefix lineage

This prefix has changed hands. Dates are when each change was first observed in public registration data (runZero mac-tracker).

  1. Cisco Systems Jul 8, 2010
  2. CISCO SYSTEMS, INC. Jan 30, 2013
  3. Cisco Systems Jan 31, 2013
  4. CISCO SYSTEMS, INC. Feb 14, 2013