Network Identifiers Tools
Network identifier reference and tools: MAC address structure, private IPv4 ranges and subnet masks, plus IPv6 global unicast and ULA prefixes explained.
网络标识符速查表 (Network Identifiers) is a frequently consulted reference for developers. Keeping the reference and ready-to-use tools on one page cuts the cost of switching back and forth. All tools below run locally, are free, and need no sign-up.
Related Tools
- 🖧MAC Address GeneratorBulk-generate spec-compliant random MAC addresses with a vendor OUI prefix and colon, hyphen or dot separators, then copy the whole batch in one click.
- 🔎MAC Address Vendor LookupLook up the vendor, country and organization behind any MAC address by OUI prefix using the IEEE registry. Paste a full address or just the first three bytes.
- 🌐IPv6 ULA GeneratorGenerate IPv6 unique local addresses in the fd00::/8 range with a custom subnet ID and EUI-64, for homelabs and private networks that stay stable over time.