Prefix bits of 0.0.0.0 /8 were reserved by IANA in September 1981. Prefix bits of 127.0.0.0 /8 were reserved by IANA in September 1981.
Prefix bits of 128.0.0.0 /16 are used by various address registries and were reserved in May 1993.
Prefix bits of 191.255.0.0 /16 are used by various address registries and were reserved in May 1993.
Prefix bits of 192.0.0.0 /24 are used by various regional address registries and were reserved in May 1993.
Prefix bits of 223.255.255.0 /24 were reserved by IANA in September 1981.
Prefix bits of 240.0.0.0 /4 denote the traditional Class E address space and are used only for experimental purposes.
Martians
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