131.101.77.0/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
131.101.77.0
Broadcast Address
131.101.77.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
131.101.77.1
Last Usable IP
131.101.77.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (131.101.77.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 131.101.77.31 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 131.101.77.0/27
Network Address 131.101.77.0
Broadcast Address 131.101.77.31
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class B
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 131.101.77.1
Last Usable IP 131.101.77.30
Network (Hex) 0x83654D00
Broadcast (Hex) 0x83654D1F
Address Type Public / Globally Routable

Binary Representation

Network Address
10000011.01100101.01001101 10000011.01100101.01001101.00000000
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 131.101.77.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 131.101.77.0/28 131.101.77.0 131.101.77.1 131.101.77.14 131.101.77.15 14
2 131.101.77.16/28 131.101.77.16 131.101.77.17 131.101.77.30 131.101.77.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

131.101.77.0 net
131.101.77.1
131.101.77.2
131.101.77.3
131.101.77.4
131.101.77.5
131.101.77.6
131.101.77.7
131.101.77.8
131.101.77.9
131.101.77.10
131.101.77.11
131.101.77.12
131.101.77.13
131.101.77.14
131.101.77.15
… 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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