MAC Address Lookup

IBM Corp 00:21:5E

00:21:5E is a 24-bit MA-L MAC address block registered to IBM Corp in US.

Vendor

IBM Corp

MA-L · 24-bit
00:21:5E

Unicast · Universally administered (U/L bit clear)

Matched prefix
00:21:5E
Match
MA-L assignment
Address range
00:21:5E:00:00:00 – 00:21:5E:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
3039 E Cornwallis Road Research Triangle Park NC US 27709-2195
First registered
Jun 18, 2008

Formats

  • Plain hex 00215E
  • Colon-separated 00:21:5E
  • Hyphen-separated 00-21-5E
  • Cisco dot notation 0021.5E

Prefix lineage

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

  1. IBM Jun 18, 2008
  2. IBM Corp Dec 2, 2010