MAC Address Lookup

Cisco Systems, Inc E4:D3:F1

E4:D3:F1 is a 24-bit MA-L MAC address block registered to Cisco Systems, Inc in US.

Vendor

Cisco Systems, Inc

MA-L · 24-bit
E4:D3:F1

Unicast · Universally administered (U/L bit clear)

Matched prefix
E4:D3:F1
Match
MA-L assignment
Address range
E4:D3:F1:00:00:00 – E4:D3:F1:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
170 West Tasman Drive San Jose CA US 95134
First registered
Aug 28, 2012

Formats

  • Plain hex E4D3F1
  • Colon-separated E4:D3:F1
  • Hyphen-separated E4-D3-F1
  • Cisco dot notation E4D3.F1

Prefix lineage

This prefix has changed hands. Dates are when each change was first observed in public registration data (runZero mac-tracker).

  1. Cisco Aug 28, 2012
  2. Cisco Systems, Inc Sep 1, 2015