Private Range
10.0.0.0/8 Private Range
The 10.0.0.0/8 block is the largest private IPv4 range (RFC 1918), offering over 16 million addresses for internal use. Its subnet mask is 255.0.0.0.
Range details
| Property | Value |
|---|---|
| CIDR | 10.0.0.0/8 |
| Mask | 255.0.0.0 |
| Usable addresses | 16,777,214 |
| Routable on internet | No — private (RFC 1918) |
Why private ranges exist
RFC 1918 set aside these blocks for internal networks so organisations do not consume scarce public IPv4 space. Traffic to the internet is translated to a public address by NAT.
Frequently asked questions
What is the 10.0.0.0/8 range used for?
It is a private (RFC 1918) range for internal networks, not routable on the public internet. Devices reach the internet through NAT.
Is 10.0.0.0/8 public or private?
Private. It is reserved by RFC 1918 and cannot be routed on the public internet.
What is the subnet mask for 10.0.0.0/8?
The mask is 255.0.0.0.
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