Detailed information about IPv4 /24 subnets
A /24 network (Class C) provides 254 usable IP addresses and is common for small to medium-sized local networks in homes or small businesses.
| CIDR Notation | /24 |
| Subnet Mask | 255.255.255.0 |
| Binary Subnet Mask | 11111111 11111111 11111111 00000000 |
| Total Addresses | 256 |
| Usable Hosts (Standard) | 254 |
| AWS Usable IPs | 249 |
| Azure Usable IPs | 249 |
| GCP Usable IPs | 250 |
A CIDR /24 subnet has 254 usable IP addresses for hosts. This is a relatively large subnet that can be further divided into smaller subnets if needed.
Smaller subnets like this help improve network security and reduce broadcast domain size.
Cloud providers reserve some IP addresses in each subnet for internal use, resulting in fewer usable IPs:
When planning your cloud infrastructure, consider these reserved addresses to accurately size your subnets.