Classless Inter-Domain Routing (CIDR) Tools

Everything about this Classless Inter-Domain Routing address block

Base information

Address Block 2001:db8::/32
First address 2001:db8::
Last address 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff
Hosts in range 79 228 162 514 264 337 593 543 950 336
Mask bits 32

IANA Special-Purpose Registry

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

Address Block 2001:db8::/32
Purpose Documentation
Allocation Date July 2004
Termination Date N/A
Source false
Destination false
Forwardable false
Globally Reachable false
Reserved by protocol false
Defined in RFC [RFC3849]


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CIDR information and calculator

Analyze a CIDR

Example: or 2001:db8::/32