Why Azure reserves first four IP address of a subnet - Stack Overflow
Broadcast address | What is a broadcast IP and how does it work? - IONOS
BlueCat Address Manager: My IPAM Quick Actions - GROK Knowledge Base
IPv4 - Reserved Addresses
Enno Rey on X: "Development of "Special Use IPv4 Addresses" over time (RFC 3330, RFC 5735, [current] IANA Special-Purpose Address Registry) https://t.co/pSMe4FdCCJ" / X