IPv6 subnet calculator

IPv6 CIDR range for 2409::/109

Calculate the network address, final address, mask, and exact address capacity of any IPv6 CIDR prefix.

Example: 2606:4700::/32

Host bits are normalized to the network address before the range is calculated.

CIDR calculation

Network details for 2409::/109

The prefix identifies a network with 19 host bits. Every address from the first address through the last address belongs to this range.

CIDR prefix

2409::/109

Network mask

ffff:ffff:ffff:ffff:ffff:ffff:fff8:0

Prefix length

/109

Host bits

19

First address

2409::

Last address

2409::7:ffff

Total addresses

524288

Total addresses (human readable)

2^19 addresses (524,288; about 524.28 thousand)

How this range is calculated

  1. 1The /109 prefix keeps the first 109 network bits fixed.
  2. 2Setting all 19 host bits to zero produces 2409::.
  3. 3Setting those host bits to one produces 2409::7:ffff.

Network address

The normalized prefix base

CIDR notation describes a network, not a single host. If an address with host bits set is entered, this calculator normalizes it to the network base before calculating the range.

Expanded network address

2409:0000:0000:0000:0000:0000:0000:0000

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