IPv6 subnet calculator

IPv6 CIDR range for 2404:8500::/117

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 2404:8500::/117

The prefix identifies a network with 11 host bits. Every address from the first address through the last address belongs to this range.

CIDR prefix

2404:8500::/117

Network mask

ffff:ffff:ffff:ffff:ffff:ffff:ffff:f800

Prefix length

/117

Host bits

11

First address

2404:8500::

Last address

2404:8500::7ff

Total addresses

2048

Total addresses (human readable)

2^11 addresses (2,048; about 2.04 thousand)

How this range is calculated

  1. 1The /117 prefix keeps the first 117 network bits fixed.
  2. 2Setting all 11 host bits to zero produces 2404:8500::.
  3. 3Setting those host bits to one produces 2404:8500::7ff.

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

2404:8500:0000:0000:0000:0000:0000:0000

Recent network calculations

Recent IPv6 CIDR Ranges

Open recent IPv6 prefixes to inspect their normalized range, mask, and address capacity.

Learn how IPv6 CIDR notation and subnet ranges work