MAC Address Lookup

Cisco Systems, Inc D8:B1:90

D8:B1:90 is a 24-bit MA-L MAC address block registered to Cisco Systems, Inc in US.

Vendor

Cisco Systems, Inc

MA-L · 24-bit
D8:B1:90

Unicast · Universally administered (U/L bit clear)

Matched prefix
D8:B1:90
Match
MA-L assignment
Address range
D8:B1:90:00:00:00 – D8:B1:90:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
170 West Tasman Drive San Jose CA US 95134
First registered
Apr 21, 2015

Formats

  • Plain hex D8B190
  • Colon-separated D8:B1:90
  • Hyphen-separated D8-B1-90
  • Cisco dot notation D8B1.90

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, 2015
  2. Cisco Systems, Inc Sep 1, 2015