MAC Address Lookup

Extreme Networks, Inc. C8:66:5D

C8:66:5D is a 24-bit MA-L MAC address block registered to Extreme Networks, Inc. in US.

Vendor

Extreme Networks, Inc.

MA-L · 24-bit
C8:66:5D

Unicast · Universally administered (U/L bit clear)

Matched prefix
C8:66:5D
Match
MA-L assignment
Address range
C8:66:5D:00:00:00 – C8:66:5D:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
2121 RDU Center Drive Morrisville NC US 27560
First registered
Sep 17, 2015

Formats

  • Plain hex C8665D
  • Colon-separated C8:66:5D
  • Hyphen-separated C8-66-5D
  • Cisco dot notation C866.5D

Prefix lineage

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

  1. Aerohive Networks Inc. Sep 17, 2015
  2. Extreme Networks, Inc. Feb 1, 2020
  3. Extreme Networks Headquarters Jul 15, 2023
  4. Extreme Networks, Inc. Jun 26, 2026