/10 Subnet Mask (255.192.0.0)
| Prefix | /10 |
|---|---|
| Subnet mask | 255.192.0.0 |
| Wildcard mask | 0.63.255.255 |
| Binary mask | 11111111.11000000.00000000.00000000 |
| Total addresses | 4,194,304 |
| Usable hosts | 4,194,302 |
| Host bits | 22 |
| Subnets of /10 in a /8 | 4 |
e.g. 10.0.0.5/22 or 10.0.0.5 255.255.252.0
| Network address | 10.0.0.0 | |
|---|---|---|
| Broadcast address | 10.63.255.255 | |
| First usable host | 10.0.0.1 | |
| Last usable host | 10.63.255.254 | |
| Total addresses | 4,194,304 | |
| Usable hosts | 4,194,302 | |
| Subnet mask | 255.192.0.0 | |
| Wildcard mask | 0.63.255.255 | |
| CIDR notation | 10.0.0.0/10 | |
| IP class | Class A (legacy) | |
| Address type | Private (RFC 1918) | |
| IP address (binary) | 00001010.00000000.00000000.00000000 | |
| Subnet mask (binary) | 11111111.11000000.00000000.00000000 |
■ network bits ■ host bits
| Requested hosts | CIDR | First host | Last host | Broadcast | Usable hosts |
|---|
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What is a /10 subnet?
A /10 subnet uses the first 10 bits of an IPv4 address for the network and leaves 22 bits for hosts. Its subnet mask is 255.192.0.0, and it contains 2²² = 4,194,304 addresses, of which 4,194,302 can be assigned to devices. Typical use: 100.64.0.0/10 is the carrier-grade NAT shared address space (RFC 6598). Use the subnet calculator above to check any /10 network.
/10 subnet example
For 10.0.0.0/10: network address 10.0.0.0, usable hosts 10.0.0.1 – 10.63.255.254, broadcast address 10.63.255.255, wildcard mask 0.63.255.255.
Frequently asked questions
How many usable IPs are in a /10?
4,194,302. The block has 4,194,304 addresses; the first is the network address and the last is the broadcast address.
What is the subnet mask for /10?
255.192.0.0, or 11111111.11000000.00000000.00000000 in binary.
How many /10 subnets are in a /8?
4 (2²), because a /10 uses 2 more network bits than a /8.
What is the difference between /10 and /9?
A /9 (255.128.0.0) is twice as large: 8,388,608 addresses and 8,388,606 usable hosts, spanning two consecutive /10 blocks such as 10.0.0.0–10.127.255.255.