ZMap Internet Scanner

ZMap is a fast single packet network scanner designed for Internet-wide network surveys. On a typical desktop computer with a gigabit Ethernet connection, ZMap is capable scanning the entire public IPv4 address space on a single port in under 45 minutes. With a 10gigE connection and netmap or PF_RING, ZMap can scan the IPv4 address space in under 5 minutes.

GitHub - zmap/zmap: ZMap is a fast single packet network scanner designed for Internet-wide network surveys.GitHub

Other products from ZMap to use in conjunction

The ZMap Project