10.0.0.0/8 (Private Network Range)
PrivateRFC 1918
10.0.0.0/8 at a glance
| CIDR block | 10.0.0.0/8 |
|---|---|
| First address | 10.0.0.0 |
| Last address | 10.255.255.255 |
| Total addresses | 16,777,216 |
| Subnet mask | 255.0.0.0 |
| Prefix length | /8 |
| Type | Private |
| Publicly routable | No |
| Defined in | RFC 1918 |
Open in CIDR calculator/8 subnet details
What is 10.0.0.0/8 used for?
10.0.0.0/8 is the largest of the three private IPv4 ranges defined in RFC 1918. Its addresses are not routed on the public internet, so any organization can use them internally behind NAT. Large enterprises and cloud VPCs carve it into /16 or /24 subnets.
Common subnets of 10.0.0.0/8
Overlaps and conflicts
10.96.0.0/12 and 10.244.0.0/16 (Kubernetes defaults) — pick VPC ranges that avoid them.
- Contains 10.0.0.0/16
- Contains 10.0.0.0/24
- Contains 10.96.0.0/12
- Contains 10.244.0.0/16
FAQ
Is 10.0.0.0/8 private?
Yes. It is one of the three RFC 1918 private ranges and is not routable on the public internet.
How many /24 networks fit in 10.0.0.0/8?
65,536.