MAC Address Lookup

SerialTek LLC 00:21:E3

00:21:E3 is a 24-bit MA-L MAC address block registered to SerialTek LLC in US.

Vendor

SerialTek LLC

MA-L · 24-bit
00:21:E3

Unicast · Universally administered (U/L bit clear)

Matched prefix
00:21:E3
Match
MA-L assignment
Address range
00:21:E3:00:00:00 – 00:21:E3:FF:FF:FF
Addresses in block
16,777,216
Country
US
Organization address
1570 Oakland Road San Jose CA US 95131
First registered
Jun 18, 2008

Formats

  • Plain hex 0021E3
  • Colon-separated 00:21:E3
  • Hyphen-separated 00-21-E3
  • Cisco dot notation 0021.E3

Prefix lineage

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

  1. BusTek LLC Jun 18, 2008
  2. SerialTek LLC Jun 23, 2009