255.255.255.252/31
PublicClass E (Reserved) — /31 prefix — 2 usable hosts
Network Address
255.255.255.252
Broadcast Address
255.255.255.253
Subnet Mask
255.255.255.254
Usable Hosts
2
First Usable IP
255.255.255.252
Last Usable IP
255.255.255.253
Total IPs
2
Prefix Length
Network address — the base address of the block (255.255.255.252). All devices in this subnet share this prefix. Cannot be assigned to a host.
Broadcast address — packets sent to 255.255.255.253 are delivered to every device in the subnet. Also reserved — not assignable.
Usable hosts — the 2 addresses between those two that you can assign to servers, VMs, or interfaces.
Subnet mask — 255.255.255.254 is the dotted-decimal equivalent of /31. Older tools and Cisco configs use this format instead of CIDR slash notation.
Full Details
| CIDR Notation | 255.255.255.252/31 |
| Network Address | 255.255.255.252 |
| Broadcast Address | 255.255.255.253 |
| Subnet Mask | 255.255.255.254 |
| Wildcard Mask | 0.0.0.1 |
| Prefix Length | /31 |
| IP Address Class | Class E (Reserved) |
| Total IP Addresses | 2 |
| Usable Host Addresses | 2 |
| First Usable IP | 255.255.255.252 |
| Last Usable IP | 255.255.255.253 |
| Network (Hex) | 0xFFFFFFFC |
| Broadcast (Hex) | 0xFFFFFFFD |
| Address Type | Public / Globally Routable |
Binary Representation
Network Address
11111111.11111111.11111111
11111111.11111111.11111111.11111100
Subnet Mask
11111111.11111111.11111111.11111110
The first 31 bits (1s in the mask) identify the network. The remaining 1 bits identify hosts within the network.
All 2 IP Addresses in this Range
255.255.255.252
net
255.255.255.253
bcast
/31 Subnet Reference
Total IPs
2
Usable Hosts
2
Subnet Mask
255.255.255.254
Wildcard
0.0.0.1