MAC Address Lookup

Cisco Systems, Inc 00:25:B4

00:25:B4 is a 24-bit MA-L MAC address block registered to Cisco Systems, Inc in US.

Vendor

Cisco Systems, Inc

MA-L · 24-bit
00:25:B4

Unicast · Universally administered (U/L bit clear)

Matched prefix
00:25:B4
Match
MA-L assignment
Address range
00:25:B4:00:00:00 – 00:25:B4:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
80 West Tasman Drive San Jose CA US 94568
First registered
Mar 29, 2009

Formats

  • Plain hex 0025B4
  • Colon-separated 00:25:B4
  • Hyphen-separated 00-25-B4
  • Cisco dot notation 0025.B4

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 Mar 29, 2009
  2. CISCO SYSTEMS, INC. Jan 30, 2013
  3. Cisco Systems Jan 31, 2013
  4. CISCO SYSTEMS, INC. Feb 14, 2013