MAC Address Lookup

Alcad SL 00:1D:21

00:1D:21 is a 24-bit MA-L MAC address block registered to Alcad SL in ES.

Vendor

Alcad SL

MA-L · 24-bit
00:1D:21

Unicast · Universally administered (U/L bit clear)

Matched prefix
00:1D:21
Match
MA-L assignment
Address range
00:1D:21:00:00:00 – 00:1D:21:FF:FF:FF
Addresses in block
16,777,216
Country
ES
Organization address
Pol. Ind. Arreche-Ugalde, 1 Irún Guipúzcoa ES E-20305
First registered
Aug 18, 2007

Formats

  • Plain hex 001D21
  • Colon-separated 00:1D:21
  • Hyphen-separated 00-1D-21
  • Cisco dot notation 001D.21

Prefix lineage

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

  1. Alcad S.A. Aug 18, 2007
  2. Alcad SL Jun 23, 2009