11.131.80.0/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
11.131.80.0
Broadcast Address
11.131.80.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
11.131.80.1
Last Usable IP
11.131.80.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (11.131.80.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 11.131.80.31 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 11.131.80.0/27
Network Address 11.131.80.0
Broadcast Address 11.131.80.31
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 11.131.80.1
Last Usable IP 11.131.80.30
Network (Hex) 0x0B835000
Broadcast (Hex) 0x0B83501F
Address Type Public / Globally Routable

Binary Representation

Network Address
00001011.10000011.01010000 00001011.10000011.01010000.00000000
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 11.131.80.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 11.131.80.0/28 11.131.80.0 11.131.80.1 11.131.80.14 11.131.80.15 14
2 11.131.80.16/28 11.131.80.16 11.131.80.17 11.131.80.30 11.131.80.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

11.131.80.0 net
11.131.80.1
11.131.80.2
11.131.80.3
11.131.80.4
11.131.80.5
11.131.80.6
11.131.80.7
11.131.80.8
11.131.80.9
11.131.80.10
11.131.80.11
11.131.80.12
11.131.80.13
11.131.80.14
11.131.80.15
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

Calculate Another