MAC Address Lookup

Cisco Systems, Inc 00:11:21

00:11:21 is a 24-bit MA-L MAC address block registered to Cisco Systems, Inc in US.

Vendor

Cisco Systems, Inc

MA-L · 24-bit
00:11:21

Unicast · Universally administered (U/L bit clear)

Matched prefix
00:11:21
Match
MA-L assignment
Address range
00:11:21:00:00:00 – 00:11:21: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 25, 2004

Formats

  • Plain hex 001121
  • Colon-separated 00:11:21
  • Hyphen-separated 00-11-21
  • Cisco dot notation 0011.21

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 25, 2004
  2. CISCO SYSTEMS, INC. Jan 30, 2013
  3. Cisco Systems Jan 31, 2013
  4. CISCO SYSTEMS, INC. Feb 14, 2013