About
About macadress.
A MAC vendor lookup built by developers who were tired of tools that stop at the vendor name.
We're not the fifth company to wrap IEEE's OUI file in a search box. We're the one that bothered to explain what the bits actually mean.
Why we built this
Every MAC lookup tool we tried before building this one did the same three things: took a MAC address, matched the first few bytes against a database someone downloaded once, and printed a vendor name. That's it. No mention of whether the address was even real, universally assigned hardware, or a randomized one your OS made up five minutes ago for privacy. No explanation of why the address looks the way it does. No API you'd actually want to build on, or one that made you sign up just to try it.
We wanted something a developer would reach for first: fast, honest about what it does and doesn't know, and willing to show its work instead of handing back a bare string.
What we do differently
macadress.com syncs IEEE's MA-L, MA-M, MA-S, IAB, and CID registries on a recurring schedule, not once at launch and never again. Every result explains itself in plain English: what the address's administration and transmission bits mean, its IEEE 802c SLAP quadrant, its derived EUI-64 and IPv6 link-local address, and whether it looks randomized, with the reasoning shown, not just a label. The free plan includes a real API key the moment you sign up, no waiting on anyone's approval. And if you'd rather nothing leave your own network, the same binaries we run are licensed for self-hosting.
Who's behind it
macadress.com is a product of ApisOS FZE. We build developer-first tools we'd want to use ourselves: this one started because we needed exactly what it does and couldn't find it built the way we wanted, so we built it.
Talk to us
Question, bug, or a self-hosted license to ask about: get in touch.