6 Best Free Online OUI Lookup Websites

Here is a list of best free online OUI Lookup websites. OUI or Organizationally Unique Identifier is a 24-bit number that provides a way of uniquely identifying vendors and manufacturers of network devices. On the other hand, OUI Lookup is a process to find out the network devices’ names, addresses, and other information using their MAC addresses. If you also want to perform the OUI Lookup, then check out these online OUI Lookup websites.

Through these websites, users can quickly perform OUI Lookup using the MAC address of a network address. On some websites, users can also enter multiple MAC addresses of network devices to simultaneously look up their OUI data. After performing the lookup process, these websites show the company name of devices, company addresses, block details, MAC address details, and more. Users can copy all the obtained details. To help out new users, I have also included the steps of OUI lookup in the description of each website.

These websites also come with additional tools that may come in handy. Using additional tools, users can generate random MAC addresses, view global statistics, generate Hash, etc. Go through the list to know more about these websites.

My Favorite Online OUI Lookup Website:

aruljohn.com is my favorite website as it can perform OUI lookup for multiple network devices at a time. Plus, it is quite simple to use.

You can also check out lists of best free Online MX Lookup, Online NSLookup, and Online Port Scanner websites.

aruljohn.com

aruljohn.com is a free online OUI lookup website. This website offers multiple network utility tools one of which is the OUI Lookup tool. Using this tool, users can find out the names of companies who have manufactured the network cards present on your network. To look for the network card details, users need to enter their MAC address. Now, follow the below steps.

How to perform OUI Lookup online using aruljohn.com:

Launch this website using the given link.
After that, enter one or more MAC addresses.
Next, choose the lookup MAC option and start the search process.
Lastly, view all the obtained information about the network card namely Vendor Name, Vendor Address, Block Size, and Block Range.

Additional Features:

Network Utilities: It offers tools like MAC address lookup, IP Address lookup, Phone number lookup, IP to Hostname, and more.
Text/String/ Math Utilities: It contains utilities like Hash Generator, JSON sort, Text Case, Aquarium Calculator, etc.

Final Thoughts:

It is a capable online OUI Lookup website that can fetch vendor name, vendor address, and other important details of multiple network cards at a time.

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wireshark.org

wireshark.org is a free online OUI lookup website. This website help users view up-to-date information about organizationally unique identifiers and mac address prefixes. To do so, it uses the Wireshark manufacturer database that carries thousands of MAC addresses collected from multiple sources. Now, follow the below steps.

How to perform OUI Lookup online using wireshark.org:

Visit this website and open up the OUI Lookup Tool.
After that, copy the MAC address of a network adapter or other devices you want to look up.
Next, paste the MAC address in the OUI Search field. You can also paste multiple MAC addresses in the OUI search field at a time.
Lastly, press the Enter button to view OUI information like the name of the adapter company, device name, etc.

Additional Features:

This website also offers Wireshark software packages that users can install to their Windows and macOS systems and perform OUI lookup.

Final Thoughts:

It is another good online OUI lookup website through which users can identify devices through their MAC address connected to the same network.

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ouilookup.com

ouilookup.com is another free online OUI lookup website. This website can quickly look up and find out up-to-date information about a device connected to a network. To do that, it requires the MAC address of the device. After finding the information about the device, it shows its Vendor Name and Vender OUI ID. Now, check out the below steps.

How to perform OUI lookup online using ouilookup.com:

Visit this website using the given link.
After that, write or paste the MAC address of a device on the network.
Now, press Enter to immediately view the Vendor Name and Vendor OUI. To view more information about the vendor click on the Go button.

Additional Features:

This website also offers multiple blogs associated with MAC addresses, Domain in Windows Server, Subnet, etc.

Final Thoughts:

It is another good online OUI lookup website that offers all the tools to find Vendor names and Vendor OUIs of devices.

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macvendorlookup.com

macvendorlookup.com is another free online OUI lookup website. This website offers a simple MAC Address Lookup or OUI Lookup tool that uses the MAC address of devices to view device details like company name, address of company, address range, type, etc. Plus, it is quite simple to use. Now, follow the below steps.

How to perform OUI Lookup online using macvendorlookup.com:

Start this website and go to the MAC Address Lookup section.
After that, enter the MAC address of a device to start the OUI lookup process.
Lastly, view the device vendor name, address range, vendor address, etc.

Additional Features:

This website also offers an additional Random MAC address Generator that can generate multiple random MAC addresses at a time.

Final Thoughts:

It is another good online OUI lookup website that not only shows the vendor name but also shows their address.

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meridianoutpost.com

meridianoutpost.com is yet another free online OUI lookup website. Like other similar OUI lookup websites, it can also look up the names of companies that manufacture network devices by using their MAC address. It also offers a tool to retrieve the OUIs of manufacturers by using their names. Now, follow the below steps.

How to perform OUI lookup online using meridianoutpost.com:

Visit this website using the given link.
After that, enter the MAC address in the MAC Address field.
Next, click on the Lookup MAC button to view the manufacturer’s name and address.

Additional Features:

Network Tools: This website also offers network tools like DNS Record Lookup, Network Tracert, Internet Connection Speedtest, Domain Lookup, and more.
Calculators and Generators: It contains tools like Amortization Calculator, Energy Usage Calculator, 1D Barcode Generator, ASCII Art Generator, and more.

Final Thoughts:

It is another good online OUI lookup website that anyone can use without much hassle.

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macaddress.io

macaddress.io is the last free OUI lookup website. This website uses the MAC addresses of network adapters to perform the OUI lookup. After performing the lookup process, it shows the network adapter company name, company address, country code, assignment block size, transmission type, and more. Now, check out the below steps to perform OUI lookup online using this website.

How to perform OUI lookup online using macaddress.io:

Start this website and open up the Lookup section.
Next, enter the mac address of a network adapter.
Now, click on the New Search button to view all the vendor details, block details, and MAC address details.