CIDR calculator

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

CIDR block

Result

Canonical CIDR

2606:f4c0:6300:0000:0000:0000:0000:0000/44

Version

IPv6

Prefix

/44

Network

2606:f4c0:6300:0000:0000:0000:0000:0000

Broadcast

n/a (IPv6)

First address

2606:f4c0:6300:0000:0000:0000:0000:0000

Last address

2606:f4c0:630f:ffff:ffff:ffff:ffff:ffff

Netmask

ffff:ffff:fff0:0000:0000:0000:0000:0000

Wildcard

n/a

Total addresses

19342813113834066795298816

Usable hosts

19342813113834066795298816