IPv6 subnet calculator

IPv6 CIDR range for ::fffe:0:0/95

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 ::fffe:0:0/95

The prefix identifies a network with 33 host bits. Every address from the first address through the last address belongs to this range.

CIDR prefix

::fffe:0:0/95

Network mask

ffff:ffff:ffff:ffff:ffff:fffe::

Prefix length

/95

Host bits

33

First address

::fffe:0:0

Last address

::ffff:255.255.255.255

Total addresses

8589934592

Total addresses (human readable)

2^33 addresses (8,589,934,592; about 8.58 billion)

How this range is calculated

  1. 1The /95 prefix keeps the first 95 network bits fixed.
  2. 2Setting all 33 host bits to zero produces ::fffe:0:0.
  3. 3Setting those host bits to one produces ::ffff:255.255.255.255.

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

0000:0000:0000:0000:0000:fffe:0000:0000

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