31.54.131.0/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
31.54.131.0
Broadcast Address
31.54.131.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
31.54.131.1
Last Usable IP
31.54.131.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (31.54.131.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 31.54.131.31 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 31.54.131.0/27
Network Address 31.54.131.0
Broadcast Address 31.54.131.31
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class A
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 31.54.131.1
Last Usable IP 31.54.131.30
Network (Hex) 0x1F368300
Broadcast (Hex) 0x1F36831F
Address Type Public / Globally Routable

Binary Representation

Network Address
00011111.00110110.10000011 00011111.00110110.10000011.00000000
Subnet Mask
11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 31.54.131.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 31.54.131.0/28 31.54.131.0 31.54.131.1 31.54.131.14 31.54.131.15 14
2 31.54.131.16/28 31.54.131.16 31.54.131.17 31.54.131.30 31.54.131.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

31.54.131.0 net
31.54.131.1
31.54.131.2
31.54.131.3
31.54.131.4
31.54.131.5
31.54.131.6
31.54.131.7
31.54.131.8
31.54.131.9
31.54.131.10
31.54.131.11
31.54.131.12
31.54.131.13
31.54.131.14
31.54.131.15
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

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