MAC Address Lookup — OUI Vendor Finder
Find the manufacturer behind a MAC address
How to Use This Tool
- Enter a MAC address.
- We normalize and extract the OUI.
- Vendor name and address flags (multicast, locally administered) are shown.
About This Tool
Every network interface has a 48-bit MAC address. The first three octets (OUI) identify the vendor. Enter any format — colon, dash, or compact hex — to normalize the address and query public OUI data.
Common use cases
- •Identify vendor from a device MAC on your LAN
- •Verify OUI for inventory and security audits
OUI vs NIC
OUI identifies the manufacturer assignment. The full MAC uniquely identifies an interface on a LAN — not routable on the internet.
Frequently Asked Questions
Yes. VSPIC offers this MAC address lookup at no cost with no account required. Results load in real time.
We do not permanently store your queries on our servers. Some tools run entirely in your browser; others fetch public data for the request only.
Yes. Open the page in any modern phone or tablet browser. Results work on Wi‑Fi and mobile data.
Need your public IP first?
Instantly see IPv4, IPv6, ISP, city, and map before other network tests.
Related Tools
Explore more free VSPIC tools for IP, DNS, security, and network diagnostics.
Speed Test
Measure download, upload, ping, and jitter for your connection
Use Free →Ping Test
Measure latency to any hostname or IP address
Use Free →Port Checker
Test if common ports are open on a host
Use Free →HTTP Status Checker
Check HTTP response codes, latency, and headers for any URL
Use Free →Website Down Checker
See if a website is up or down with multi-probe checks
Use Free →MTU Test
Calculate MTU, TCP/UDP payload sizes, and test host reachability
Use Free →
Trusted by Users Who Value Privacy
Always Free
No premium plan ever
100% Private
Files processed in browser
Instant Results
Convert in seconds
Works Everywhere
Any device, any OS