IPv6 subnet calculator

IPv6 CIDR range for 7000::/4

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 7000::/4

The prefix identifies a network with 124 host bits. Every address from the first address through the last address belongs to this range.

CIDR prefix

7000::/4

Network mask

f000::

Prefix length

/4

Host bits

124

First address

7000::

Last address

7fff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

Total addresses

21267647932558653966460912964485513216

Total addresses (human readable)

2^124 addresses (21,267,647,932,558,653,966,460,912,964,485,513,216; about 21.26 undecillion)

How this range is calculated

  1. 1The /4 prefix keeps the first 4 network bits fixed.
  2. 2Setting all 124 host bits to zero produces 7000::.
  3. 3Setting those host bits to one produces 7fff:ffff:ffff:ffff:ffff:ffff:ffff: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

7000:0000:0000:0000:0000:0000:0000:0000

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