Are the public IPv4 addresses safe to use in screenshots?

Random public IPv4s are likely to be in use — even your screenshot could collide with a real host. For docs prefer the RFC 5737 ranges 192.0.2.0/24, 198.51.100.0/24, or 203.0.113.0/24, which never appear on the public internet.

What does UAA vs LAA mean for MAC?

Universally-administered addresses come from the vendor's OUI registration with IEEE; locally-administered are set by the local admin (VMs, containers, virtualized NICs). The 2nd bit of the first octet distinguishes them.

Random IP & MAC Generator

Random

Useful when you need plausible-looking but throwaway addresses for unit tests, load generators, firewall-rule worksheets, or sample dashboards. IPv4 excludes loopback, link-local, multicast, broadcast, and the RFC 5737 documentation ranges. IPv6 is generated in 2000::/3 (global), fd00::/8 (ULA), or fe80::/10 (link-local). MAC addresses always set the multicast bit to 0; the locally-administered bit follows the UAA / LAA toggle.

—

TypeScopeHow many

Uses Math.random() — fine for mock data, not for cryptographic identifiers.

How to use

Pick an address type and scope.
Choose how many to generate (up to 500).
Hit Generate — the bulk-copy button puts the whole list on the clipboard.

Frequently asked questions

Are the public IPv4 addresses safe to use in screenshots?: Random public IPv4s are likely to be in use — even your screenshot could collide with a real host. For docs prefer the RFC 5737 ranges 192.0.2.0/24, 198.51.100.0/24, or 203.0.113.0/24, which never appear on the public internet.
What does UAA vs LAA mean for MAC?: Universally-administered addresses come from the vendor's OUI registration with IEEE; locally-administered are set by the local admin (VMs, containers, virtualized NICs). The 2nd bit of the first octet distinguishes them.