MAC Address Lookup

Extreme Networks, Inc. 58:58:CD

58:58:CD is a 24-bit MA-L MAC address block registered to Extreme Networks, Inc. in US.

Vendor

Extreme Networks, Inc.

MA-L · 24-bit
58:58:CD

Unicast · Universally administered (U/L bit clear)

Matched prefix
58:58:CD
Match
MA-L assignment
Address range
58:58:CD:00:00:00 – 58:58:CD:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
2121 RDU Center Drive Morrisville NC US 27560
First registered
Sep 15, 2022

Formats

  • Plain hex 5858CD
  • Colon-separated 58:58:CD
  • Hyphen-separated 58-58-CD
  • Cisco dot notation 5858.CD

Prefix lineage

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

  1. Extreme Networks, Inc. Sep 15, 2022
  2. Extreme Networks Headquarters Jul 15, 2023
  3. Extreme Networks, Inc. Jun 26, 2026