MAC Address Lookup

Extreme Networks, Inc. 40:18:B1

40:18:B1 is a 24-bit MA-L MAC address block registered to Extreme Networks, Inc. in US.

Vendor

Extreme Networks, Inc.

MA-L · 24-bit
40:18:B1

Unicast · Universally administered (U/L bit clear)

Matched prefix
40:18:B1
Match
MA-L assignment
Address range
40:18:B1:00:00:00 – 40:18:B1:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
2121 RDU Center Drive Morrisville NC US 27560
First registered
Jan 25, 2012

Formats

  • Plain hex 4018B1
  • Colon-separated 40:18:B1
  • Hyphen-separated 40-18-B1
  • Cisco dot notation 4018.B1

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. Jan 25, 2012
  2. Extreme Networks, Inc. Feb 1, 2020
  3. Extreme Networks Headquarters Jul 15, 2023
  4. Extreme Networks, Inc. Jun 26, 2026