MAC Address Lookup

F5 Inc. 00:23:E9

00:23:E9 is a 24-bit MA-L MAC address block registered to F5 Inc. in US.

Vendor

F5 Inc.

MA-L · 24-bit
00:23:E9

Unicast · Universally administered (U/L bit clear)

Matched prefix
00:23:E9
Match
MA-L assignment
Address range
00:23:E9:00:00:00 – 00:23:E9:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
401 Elliott Ave. W. Seattle WA US 98119
First registered
Oct 9, 2008

Formats

  • Plain hex 0023E9
  • Colon-separated 00:23:E9
  • Hyphen-separated 00-23-E9
  • Cisco dot notation 0023.E9

Prefix lineage

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

  1. F5 Networks, Inc. Oct 9, 2008
  2. F5 Inc. Jun 4, 2025