MAC Address Lookup - Format Validation / Physical Address Parsing / Unicast vs Multicast
Format validation / Address parsing / Unicast vs multicast
Useful for network troubleshooting, verifying device information and learning the basics of network addresses. Once you have confirmed a device address, you can also use My Public IP to see the egress address, or the connectivity test to check network status.
Enter a MAC address
What the MAC address lookup shows
If you want to quickly confirm whether a MAC address is valid, how the common formats are written, or whether it is closer to a unicast or multicast address, this page is a handy reference for network troubleshooting and verifying device information.
How to Use and FAQ
Q: What can the MAC address lookup page do?
A: It validates the MAC address format, outputs versions in different formats, and determines basic attributes such as unicast/multicast and the locally-administered bit.
Q: Which input formats are supported?
A: It supports the common colon-separated, hyphen-separated and plain 12-digit hexadecimal string formats.
Q: Does the page return vendor information?
A: This first version does not do offline vendor-database lookups; it is currently best suited to format validation and basic attribute explanation.
Q: How are unicast and multicast MAC addresses distinguished?
A: The page makes a basic judgement based on the least-significant bit of the first byte, helping you quickly see whether an address is closer to the unicast or multicast type.