MAC address 04:C3:E6:4 (Seyond)

MAC address prefix 04:C3:E6:4 is registered to Seyond, located at 160 San Gabriel Dr, Sunnyvale CA 94086, US. This registration is classified as MA-M (MAC Address Block Medium) containing 1,048,576 MAC addresses (2^20). The prefix was initially registered on 14 June 2018, with the most recent update made on 07 April 2026.

Vendor & Registry Dossier

Public Allocation

Assigned Prefix

04:C3:E6:4

Registrant / Organization

Seyond

Registry Chronology

Initial registration: 14 June 2018

Last updated: 07 April 2026

Assignment Classification

MA-M

(MAC Address Block Medium) containing 1,048,576 MAC addresses (2^20)

Registered Location

Country: United States (US)

Headquarters Registered Facility 🇺🇸 US

160 San Gabriel Dr
Sunnyvale CA 94086
US.

REST API v2

200 OK

CLI curl -s https://api.maclookup.app/v2/macs/04c3e64 -H 'Accept: application/json'

{
  "success": true,
  "found": true,
  "macPrefix": "04C3E64",
  "company": "Seyond",
  "address": "160 San Gabriel Dr, Sunnyvale CA 94086, US",
  "country": "US",
  "blockStart": "04C3E6400000",
  "blockEnd": "04C3E64FFFFF",
  "blockSize": 1048575,
  "blockType": "MA-M",
  "updated": "2026-04-07",
  "isRand": false,
  "isPrivate": false
}