tool1234Pro Suite
CtrlK
Dashboard
Pinned
JSON Beautifier
Regex Tester
IP Lookup
Developer Hub
Crontab Gen
JSON Beautifier
SQL Formatter
Chmod Calculator
Docker Convert
Regex Tester
Regex Cheatsheet
JSON Diff
tool1234
ToolsMAC Lookup
network

MAC Lookup

Vendor lookup

How to use it
1
Examples to try
3
Frequently asked questions
4
Continue with the next step
3
MAC LookupVendor lookup
Start using the toolHow to use itSee examplesJump to FAQContinue with the next step
Start using the toolHow to use itExamples to tryFrequently asked questionsContinue with the next step

How to use it

9

Identify the manufacturer (OUI) of a network device using its MAC address.

Step 1

How to use it 1

Enter the MAC address to find the vendor.

What teams use it for

  • Identifying unknown devices on the network
  • Investigating suspicious or rogue devices
  • Verifying device authenticity and troubleshooting
  • Automated network inventory by manufacturer
  • Detecting unauthorized WiFi devices
  • Tracking and categorizing IoT devices
  • Forensic investigation of security incidents
  • Network documentation and asset management

Examples to try

6

Check hardware vendor.

Examples to try

  • Check hardware vendor.
  • Verify inventory data.
  • Audit device lists.

Common pitfalls

  • Assuming vendor = device model.
  • Using outdated OUI data.
  • Ignoring locally administered MACs.

Frequently asked questions

4

Is the database updated?

Is the database updated?

It queries an external API for the latest OUI data.

Is it free to use?

Yes, this tool is free to use.

Where does the vendor data come from?

From OUI registries via API.

Why no match?

Randomized or locally administered MACs may not resolve.

Open the tool

Continue with the next step

Move into related tools and workflows without going back to the full directory.

Related tools

Subnet Calc
CIDR calculator
Open the tool
IPv4 Converter
IP to Dec/Hex
Open the tool
MAC Generator
Random MACs
Open the tool
Privacy Policy|Guides|About Us|Contact
© 2026 www.tool1234.co. All rights reserved.