MAC Address Lookup

Cisco Systems, Inc A8:9D:21

A8:9D: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
A8:9D:21

Unicast · Universally administered (U/L bit clear)

Matched prefix
A8:9D:21
Match
MA-L assignment
Address range
A8:9D:21:00:00:00 – A8:9D:21:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
170 West Tasman Drive San Jose CA US 95134
First registered
Dec 6, 2014

Formats

  • Plain hex A89D21
  • Colon-separated A8:9D:21
  • Hyphen-separated A8-9D-21
  • Cisco dot notation A89D.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 Dec 6, 2014
  2. Cisco Systems, Inc Sep 1, 2015