/26 Subnet Mask (255.255.255.192)
| Prefix | /26 |
|---|---|
| Subnet mask | 255.255.255.192 |
| Wildcard mask | 0.0.0.63 |
| Binary mask | 11111111.11111111.11111111.11000000 |
| Total addresses | 64 |
| Usable hosts | 62 |
| Host bits | 6 |
| Subnets of /26 in a /24 | 4 |
| Block size | 64 addresses (subnets start every 64 in the last octet) |
e.g. 10.0.0.5/22 or 10.0.0.5 255.255.252.0
| Network address | 192.168.1.0 | |
|---|---|---|
| Broadcast address | 192.168.1.63 | |
| First usable host | 192.168.1.1 | |
| Last usable host | 192.168.1.62 | |
| Total addresses | 64 | |
| Usable hosts | 62 | |
| Subnet mask | 255.255.255.192 | |
| Wildcard mask | 0.0.0.63 | |
| CIDR notation | 192.168.1.0/26 | |
| IP class | Class C (legacy) | |
| Address type | Private (RFC 1918) | |
| IP address (binary) | 11000000.10101000.00000001.00000000 | |
| Subnet mask (binary) | 11111111.11111111.11111111.11000000 |
■ network bits ■ host bits
| Requested hosts | CIDR | First host | Last host | Broadcast | Usable hosts |
|---|
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What is a /26 subnet?
A /26 subnet uses the first 26 bits of an IPv4 address for the network and leaves 6 bits for hosts. Its subnet mask is 255.255.255.192, and it contains 2⁶ = 64 addresses, of which 62 can be assigned to devices. Typical use: Splitting a /24 into halves or quarters for separate VLANs. Use the subnet calculator above to check any /26 network.
/26 subnet example
For 192.168.1.0/26: network address 192.168.1.0, usable hosts 192.168.1.1 – 192.168.1.62, broadcast address 192.168.1.63, wildcard mask 0.0.0.63.
/26 networks in 192.168.1.0/24
A /24 holds 4 /26 networks:
- 192.168.1.0/26
- 192.168.1.64/26
- 192.168.1.128/26
- 192.168.1.192/26
Frequently asked questions
How many usable IPs are in a /26?
62. The block has 64 addresses; the first is the network address and the last is the broadcast address.
What is the subnet mask for /26?
255.255.255.192, or 11111111.11111111.11111111.11000000 in binary.
How many /26 subnets are in a /24?
4 (2²), because a /26 uses 2 more network bits than a /24.
What is the difference between /26 and /25?
A /25 (255.255.255.128) is twice as large: 128 addresses and 126 usable hosts, spanning two consecutive /26 blocks such as 192.168.1.0–192.168.1.127.