Classless Inter-Domain Routing (CIDR) Tools

Everything about this Classless Inter-Domain Routing address block

Base information

Address Block 64:ff9b:1::/48
First address 64:ff9b:1::
Last address 64:ff9b:1:ffff:ffff:ffff:ffff:ffff
Hosts in range 1 208 925 819 614 629 174 706 176
Mask bits 48

IANA Special-Purpose Registry

This CIDR is in a special-purpose block reserved by IANA for special purposes.

Address Block 64:ff9b:1::/48
Purpose IPv4-IPv6 Translated Address
Allocation Date June 2017
Termination Date N/A
Source true
Destination true
Forwardable true
Globally Reachable false
Reserved by protocol false
Defined in RFC [RFC8215]


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CIDR information and calculator

Analyze a CIDR

Example: or 2001:db8::/32