MAC Address Lookup

Cisco Systems, Inc A8:B1:D4

A8:B1:D4 is a 24-bit MA-L MAC address block registered to Cisco Systems, Inc in US.

Vendor

Cisco Systems, Inc

MA-L · 24-bit
A8:B1:D4

Unicast · Universally administered (U/L bit clear)

Matched prefix
A8:B1:D4
Match
MA-L assignment
Address range
A8:B1:D4:00:00:00 – A8:B1:D4:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
80 West Tasman Drive San Jose CA US 94568
First registered
Apr 21, 2010

Formats

  • Plain hex A8B1D4
  • Colon-separated A8:B1:D4
  • Hyphen-separated A8-B1-D4
  • Cisco dot notation A8B1.D4

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 Apr 21, 2010
  2. CISCO SYSTEMS, INC. Jan 30, 2013
  3. Cisco Systems Jan 31, 2013
  4. CISCO SYSTEMS, INC. Feb 14, 2013