IPv6 subnet calculator

IPv6 CIDR range for 2a00::/10

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 2a00::/10

The prefix identifies a network with 118 host bits. Every address from the first address through the last address belongs to this range.

CIDR prefix

2a00::/10

Network mask

ffc0::

Prefix length

/10

Host bits

118

First address

2a00::

Last address

2a3f:ffff:ffff:ffff:ffff:ffff:ffff:ffff

Total addresses

332306998946228968225951765070086144

Total addresses (human readable)

2^118 addresses (332,306,998,946,228,968,225,951,765,070,086,144; about 332.3 decillion)

How this range is calculated

  1. 1The /10 prefix keeps the first 10 network bits fixed.
  2. 2Setting all 118 host bits to zero produces 2a00::.
  3. 3Setting those host bits to one produces 2a3f: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

2a00:0000:0000:0000:0000:0000:0000:0000

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