CIDR calculator

Runs entirely in your browser. Useful for reading IP reports, ACLs, and route announcements.

CIDR block

Result

Canonical CIDR

2606:4700:8d94:0000:0000:0000:0000:0000/46

Version

IPv6

Prefix

/46

Network

2606:4700:8d94:0000:0000:0000:0000:0000

Broadcast

n/a (IPv6)

First address

2606:4700:8d94:0000:0000:0000:0000:0000

Last address

2606:4700:8d97:ffff:ffff:ffff:ffff:ffff

Netmask

ffff:ffff:fffc:0000:0000:0000:0000:0000

Wildcard

n/a

Total addresses

4835703278458516698824704

Usable hosts

4835703278458516698824704