MAC address vendor

ADVANCED TECHNICAL SOLUTIONS — device identity Unknown

Primary prefix
00:40:DB
Block
MA-L

Summary

// what this is
Advanced Technical Solutions is registered to MAC prefix 00:40:DB in the IEEE OUI database. When a device's MAC address begins with 00:40:DB, that block was registered by Advanced Technical Solutions — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: High  ·  2 sources  ·  How this page is checked

A MAC address beginning 00:40:DB identifies an IEEE MA-L assignment registered to ADVANCED TECHNICAL SOLUTIONS; the record does not identify a device type or product. The registry match establishes the assigned prefix, not who operates a particular device or whether it is safe.

The assigned prefix is 24 bits, leaving 24 bits for the remaining address. There are 16,777,216 possible suffix values under that prefix; this is an address-space count, not a count of devices, shipments, or observed traffic.

The first octet 00 has Group bit 0 and Local bit 0. Those bits are fixed for an exact 00:40:DB match. Changing either bit changes the prefix, so such a changed address does not match this assignment. RFC 7042 describes the significance of these bits and the structure of 48-bit MAC identifiers.

Device type
Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
[ 02 ] — OUI prefixes

Assignments by IEEE.

1
// registered prefixes1
  1. 00:40:DBMA-L
[ 03 ] — Related

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